Blockchain can sustain without crypto but crypto cannot without blockchain.
This is hilarious, blockchain technology was invented like 4-5 years ago, while Bitcoin was created 11 years ago, but you tell us that crypto can't do without blockchain? And blockchain it yet to be used beyond trial applications and experiments, while Bitcoin is used as a currency, an investment and a tool for achieving freedom. And a lot of the "blockchain technology" hype has vanished when crypto entered bear market, which shows that it's actually blockchain that depends on crypto as of now.