it depends on whether you are actually quitting or exiting. and also it depends on what is it you are quitting, is it bitcoin or an altcoin or something else? i am going to assume it is bitcoin:
to quit, there is no strategy. you just sell and say bye bye to bitcoin.
to exit, you usually want to sell at a price that you know is a bubble or is a mini bubble or basically anything that is going to be followed by a correction during rises.

for example today where price went up fast, it was a good time to sell but you had to sell at $5000 or anywhere near it and then buy back again when the market calmed down around $4650 to $4750.
which means 25% profit on the rise and buy back of same amount or more with the profit at 5-7% after the correction.

that is not what leads to the devaluation of a cryptocurrency.
for some reason people only see half of the very popular basic economic concept called "supply and demand". but it is two forces working against each other. what you are talking about here is only the supply part and because all those altcoins have 0 demand (they are useless) the forces against the supply are nonexistent so the price of them keeps going down.

so how to fight this?
simple. create useful cryptocurrency and then set the supply of it in a way that can match that demand.

that is the problem with any coin distribution system that is based on "profit" or in other words is designed in a way to give you more if you have more. at some point there will be whales who end up owning a large amount and they only keep it while they are pumping the coin and as they are done pumping they suddenly dump crashing the price hard.
it can happen to masternode coins, to PoS coins, and anything that is similar to that design.

in some ways this can be considered a "replacement" though. for example when you were previously paying for something with fiat (credit card,...) now you are paying with bitcoin. so you have replaced them with bitcoin.

what bitcoin is not, is a tool to "kill" all other payment methods and replace them "completely".

but he wasn't just wrong about predicting the price he was ridiculously wrong and kept on insisting on his target price which at some point became too obvious is never going to happen.
i mean we have all made mistakes and will make them but every trader should be flexible in the market and change with it, if you stick to one trend and never give it up you will lose.

there is nothing funny about someone who has been scamming people and pulling an identity fraud which is illegal all around the world. at least i don't find anything funny about it.
besides, with joke or not, we are giving this scammer more attention each time we talk about him and that is exactly what he needs to scam people.

people hearing about bitcoin on the news or reading it on some website like CCN where they only talk about how price has gone up fast and big and then dropped just like that, does NOT mean they have an idea what bitcoin is all about.
there is a big difference here. and we are still living in the years where people are in the dark. they either don't know what bitcoin is or think it is some pump and dump thing.

it is still a ton less risky compared to storing the private keys digitally like on a computer inside a hot wallet or in some text file on your hard disk. worst of all is to store it in the cloud and people these days are using these methods a lot more than paper wallets!!!

here's beer in your eye...

very true but the case with countries like Venezuela and any similar situation has rarely been about them using bitcoin as a payment option at this point since the adoption is not really great even in other countries. it is usually about them investing in bitcoin (as is the case with most other places). and it is about how people look to save the value of their wealth as the value of local currency tanks.

you can never be sure about the market trends that bitcoin has at any time. but that doesn't mean it is not possible to make a speculation or know whether a certain trend is at the end of its life line.
in this case, for the past couple of months saying bear market was over has been the most obvious statement as it still is. and the more we move upwards and break new resistances the more this trend changes into a bullish one.

the problem and consequently the risk of selling bitcoin to buy back again in the dip is always about timing. otherwise it has always been a wise choice to sell bitcoin as long as you are doing it at the right time. for example when we were at the top of the peak, or when the support was broken and price showed a great potential of big drop,... at these times you must have sold. but similarly when the drop is over, when we are at or close to the bottom, ... selling would be the stupidest idea.
that is why you sometimes feel the stress, it is because you have bad timing.

sometimes when you have too much bitcoins, it doesn't make much sense to put it in fifty different addresses. specially when you are already handling thousands of addresses.
of course i am talking about this case which is obviously an exchange service. they have multiple cold storages which they keep coins in. and of course that is why when they get hacked a lot of money goes up in smokes at once.

that particular address was emptied back in 2014 the FBI thing and btc-e's closure was a much more recent event. i can't recall the exact year but it was either 2017 or 2016 which is at least 2 years after that wallet went empty.
also btc-e has been working under a different name (wex or something like that) ever since and people could access their accounts a while after btc-e was closed in the new site.

you do realize that these two statements that you made here are in exact contradiction to each other, right?
if you truly believe that bitcoin price largely depends on manipulators who according to you control the market then you should NOT buy bitcoin at all. you should always stay away from anything that is manipulated in that level.

of course what you are saying is pure nonsense because you are exaggerating the level of manipulation that bitcoin has, possibly because you have heard something somewhere which is now repeating it here.

when it comes to bitcoin price it is never about how much it has dropped from its ATH but it is always about how much it has risen in the long run. and in the past 2 years price has gone up from $900 to $4000 and that is a rise.
besides when it comes to owning something as a long term investment it is about how much potential it has. even if bitcoin has dropped 80% from the ATH it still has a lot of potential to rise to that ATH and beyond but BCH does not have any potential and it losing value means game over.

from the dawn of time as soon as people (mostly newbie investors) started relying on some centralized service (a website, some group, signal channels,...) to get their information from instead of using the exchanges directly, they themselves begged for receiving fake biased data in return!
all of these websites are also making money, one of the ways they can make money is bribes. in other words to get paid to list a coin, not list a coin, change ranks, fake trading volume of a coin or even exchanges,...

if you check out some of the market statistics you can clearly see that the volume is still pretty high which shows that a lot of people are  currently buying bitcoin,
the only reason price is not yet shooting up is because all those people don't want to pay any more than $4k so whenvever price goes higher they stop buying and wait for it to come back down to continue buying cheap coins again.

or maybe others follow the same path if they also see there is money to be made.
that is the biggest problem when centralized organizations get involved in bitcoin, there is always greed and they always end up caring only about making money.
i wouldn't run anything closed source because i consider them 100% unsafe. it is not just about stealing my bitcoins but it is mainly about betraying my privacy.

i don't really see any "surge" so imagine my surprise reading the very first line your comment here!
as for the prire relations, so far i have not seen it work that way in the past 9 years that LTC has been around. in fact it has always worked the other way around meaning when bticoin rises litecoin gets pumped to follow it up.