Warren Buffet is right far more often than he is wrong.
He has the three things that winning traders have that losing traders do not have: 1) experience 2) patience 3) confidence
and a bonus - connections
He probably understands Bitcoin far better than he admits since, contrary to those that sleep on dirt floors while pretending to be trading oracles claim, cryptocurrencies are not difficult for traders or people in finance to understand.
I'm all for cryptocurrencies as a means of exchange but I hate it as an investment. The sooner it collapses in value and wipes out all of the idiot speculators the better.
Go speculate on commodities. At least those are predictable.
I agree with what you are saying, but two comments nevertheless:
The fact that Buffet (probably) well understands the world of crypto may not exclude the possibility that, whatever he is saying, is being said towards his goal and is not "just idle talking". There may be a second bottom to it.
And he has great experience when it comes to winnowing good and promising stocks from the bad ones. So maybe he can do it in crypto world, too?