Fiat was surely used for crime since the beginning of it, and this hasn't prevented its adoption. Frankly, anything can be used as a way to fund crime, whether it's a fungible currency or tangible goods/services.

Just because something can be used maliciously doesn't mean it should be demonized and banished despite its non-malicious potential (cryptocurrencies is one of the very few real use-cases of blockchain).

> speculation

Isn't his entire empire nowadays based on essentially speculation? Very bold from him to complain about this. I definitely feel jealousy in there.