> while 2 decades after invention of crypto there are still basically zero legitimate use cases.

The first card on the homepage of the DTCC (https://www.dtcc.com/) is "Tokenization". This is a legitimate use case and is being adopted at the largest institutional level. Stablecoins are yet another legitimate use case.

Edit: for what it's worth, I do agree that the crypto craze was insane. I also think the AI craze is insane, even though I agree that its current proliferation is larger than crypto.