because he is bag holding it and wished its price to go even a little higher so he can dump it with a little less loss.
that is the only type of answer that you will get when you ask a question like that. people will always advertise the coins they are bag holding.

open preev.com to see the bitcoin price. this is the price that i don't hesitate buying bitcoin at, no matter when you are reading this comment from now to 5 years from now at least!

it is obvious that bitcoin has a lot of potential and the current adoption that has happened is nowhere near the mass adoption and that makes this price for many years to be super cheap. even $20k was cheap considering the potential and the rise that it will have in the long run.
it is like saying $1000 was too much for bitcoin back in 2013!!! when price reaches $1 million in a couple of years from now, $20k would seem like nothing.

it is such a common thing with ethereum these days that it almost happens every week. and it doesn't need a lot of transactions either. a small rise will make the network congested and increases the fees (gas) that you have  to pay to process your transactions.
that is one of the many flaws that i have always been warning people about and nobody listened...

exchanges that add KYC out of nowhere without any warnings are the worst. they basically fuck their users in the ass one day and expect them to thank them also.

and in my opinion they kill their own business by doing it too. people aren't going to give up their information at all they will simply move to another exchange. that is how Binance grew big to #1 rank.
and eventually they will all go extinct and be replaced by decentralized exchanges

making money is the last thing of importance when it comes to creating a currency! and so far only bitcoin has been a currency which is why it has value and it is keeping it and also increasing it every day as its adoption grows.

so if another better currency was created in the future you are correct.

so far what we have in altcoins is shitcoins made for pump and dumps and profit making. so you make more profit from these shitcoins but they won't even come close to bitcoin ever.

many of the altcoins are still in bubbles that have not yet popped completely so they will continue to slide down. but at the same time when you say "market" you are talking about nearly 2000 different altcoins so there are also many of them that have exited their bubbles completely and have been more than ready for pumps. in fact some of them have actually been getting pumped so far rising up in price and giving their investors a huge short term profit.

i still don't consider ETH to be at its bottom or even near it. which means the current price may seem low but it is still a bubble and it makes it high. it needs to go a lot lower to reach that bottom where it can start rising up properly again.

but that doesn't mean we can't make profit from it now. there is still mini-pumps  and dead cat bounces that happen in this coin that can be taken advantage of and you can make some profit this way.

i don't know exactly how these decentralized exchanges you named work but in centralized ones like Binance the orderbook is a queue not a "choose whatever you want" line. which means if there are 3 sell orders like this (prices):
00.00004400
00.00040000
96.00000000

you first have to fill the first two orders on top before reaching the third one. and filling those two requires spending money. even if you execute an order on 96BTC price the system will automatically fill the first order and if there was anything left it will fill the next and next,.... it doesn't let you fill the last one.
now in reality there aren't just 2 orders there are A LOT and it will take A LOT of money to get there.

it is obviously that like people who buy bitcoin not every business/vendor/merchant does the same thing. they  have different views, different risk managements plans and different goals, they also have different number of payments (for example someone may get 1 BTC payment among 1000 fiat and someone may get 100% bitcoin payments only and no fiat).

as an example imagine someone who wants to invest in bitcoin and has a shop. he can simply add a "Bitcoin is accepted here" sign and receive bitcoin payments instead of receiving fiat and then using that fiat to buy bitcoin. so the payment he receives won't be sold.
this is somewhat like what most of us do. we earn bitcoin and hold that earned money instead of converting it back to fiat. so that is kind of the direct investment without the hassle of going through exchanges.

i think we should first clarify that there are two different things here that shouldn't be confused with each other:
1. using exchanges as your wallet or conversely to store your coins.
2. using exchanges to trade and being forced to leave some funds there in open orders

the first one is obviously wrong and there is no argument there. and even if you found the most trustworthy and safe exchange out there you still should use it as your wallet because you do not control the private keys so you have no control over your keys.

but the second one is as mentioned earlier a necessary evil and we all use them. and we are forced to leave our funds on exchanges if we want to trade like opening an order and waiting for it to be filled.

yes this is somewhat of an old news. the "Alert System" has not been in use for a very long time now and there has been a lot of discussions about it so far. you can read the story and see the actual keys in this topic if you are interested: https://bitcointalk.org/index.php?topic=4587836.0

OP is obviously exaggerating. and you are wrong.
people don't give a shit what an altcoin's supply is or how scammy they are. they only care about how hyped up that shitcoin is to be able to assess how much profit they can make from it.
you can see a lot of coins with billions of coins in circulation are being pumped hard every day.

each time there is a big rise like this (which has happened about 5 or 6 times in the past 9 years of bitcoin history) it is followed by a big drop like what you are seeing now.

and during that drop, big whales who want to fill their pockets with cheap bitcoin before the surge begins start telling others how it is impossible to see a surge.

we have seen them say surge to $1 is not possible anymore...
then they said surge to $10 is not possible anymore...
then they said it about $20....
then about... $100 and $1200 and now about $20,000...

and guess what happens each time?

LOL at least learn how to FUD before you start topics like this which you think are FUD but are only laughable.

first of all you have no way of knowing how much deposits and how much withdrawals are happening on Coinbase unless you have access to their database.

secondly the article seems to be written by a 6 year old who doesn't understand anything about anything. they are desperately trying to link unrelated stuff together and create their FUD and say price is falling lower. and the funny thing is after the article was published we had a huge price surge upwards

seems like people are starting to take these dumb articles as a good buy signal.

very true but i am still worried about altcoins. that market has grown too big and has not yet come out of the bubble. which means there is still a good chance that we continue seeing the dumps go on in the altcoin market and that will be big enough to even affect bitcoin price.

this only works in theory. in practice you won't be able to do it because the volume is not that high (20BTC). you may be able to do it with 0.01BTC or less in some cases and do it fast with super high speed to complete the 3 orders and get the profit out.
considering the fees and the fact that market is moving based on the price of bitcoin it becomes near impossible to make profit this way. let alone do it with 20BTC and affect the bitcoin price in any way.

because this news (and consequently the ban news that was a while ago) is completely irrelevant to the price of coins. just because price dropped when the "ban news" came out it doesn't mean it was the cause of the drop!
the reason for the drop is simply because altcoins are still in a bubble

nothing is good right now really!
i like the idea of smaller altcoins that are getting pumped and i also use it myself most of the times but that is also risky these days since the market is being pulled down by the bigger coins that are getting dumped.
maybe it is best to not trade anything at all at times like this.

it is more like a bubble burst rather than a correction to me. for example when a coin with nothing to offer but a lot of hype goes from ~$100 to $1400 it needs to come down to at least $200 and best case scenario back to its real value of $100 before the market calms down.

of course when we have a lot of bag holders who are constantly told that their coins (portfolio) is going to make them rich if they are "patient" we end up have a lot of depressed bag holders!

these amounts, no matter how big they seem to be, has never affected bitcoin price in the history of bitcoin. and we have had quite a lot of them so far in the past 9 years and this one is not even the biggest.
so no, if you are waiting for some sort of drop because of this then don't hold your breath.