It is still illegal to launder money, but it is legal to develop contracts that facilitate laundering money. Sorta like section 230 but for crypto. But that is not the same as saying you will no longer prosecute fraud.
Laundering is when you fake a legitimate source for the funds. Obfuscating the source is a different thing.
Maybe it's still worth preventing: I'd prefer to know what kind of activity I've enabled when I accept somebody's money. Just if so, it's under a different label.
