Bitcoin is not the real threat. It is actually all the other new cryptocurrencies which are much much much more advanced than Bitcoin.
Bitcoin is old and obsolete compared to the new stuff.
The age of bitcoin or the creation of new altcoins doesn't make Bitcoin obsolete. These altcoins are mere copycats and there is no way a fake product can be better than the original.
Conclusion:
Major financial attack coming on the cryptocoin industry/cryptocoin currencies ! Most shitcoins will go to zero/become worthless.
My estimate would be: Destruction within one week, maybe even just a couple of days as people start to realize what is going on.
Whoever sells their shitcoins last, is going to be the major sucker....
There is no valid proof that your assumptions are certain. But I have never been a fan of altcoin so your advice looks valid to me. You have to understand that everyone has their plans. Many of them are willing to take the risk of keeping these altcoins because they believe in them.
And whether BlackRock will succeed in its application or not, Bitcoin will get back to $69,000, reach $100,000 and beyond.
The $1millon and above bitcoin price prediction that I have been seeing currently seems like a dream to me. $70k and above looks more reasonable.