By now it has also been proven "crypto" isn't a bubble. It has been more than a decade of, for this sort of experimental asset class, pretty steady growth. The market is still there after central banks abandoned zero interest rates. Crypto has proven more resilient than the Tech startups (their bank went bankrupt and needed a bailout) and Credit Suisse.

This isn't a bubble, by this point it is a market for middleman-resistant bookkeeping. It'll be the same as gold, we've had people claiming gold is worthless for all of recorded history and it keeps on going.