It has been explained over and over again that Wasabi has no government blacklist. This means at the very best, they can make a 'best effort' attempt at preventing users from mixing their coins with criminal's coins if it was about protecting users.

Although the question remains; even in a perfect world (in a blacklist advocate's eyes) what happens if I get coins from a Wasabi mix that are tainted later?
Example:

• Assumption: Wasabi has access to government-accepted / -created list of scammers' addresses.
• Person A scams person B out of 1BTC and mixes that coin on Wasabi immediately.
• Person A gets out 'clean' coins after a few minutes; meanwhile I'm in the same mix and get the scammed coins (not yet tainted).
• It takes person B at least a few hours if not weeks or months to bring the case to the police / to court and get the scammer's coins blacklisted.
• Now a few months have passed, I want to spend my supposed 'clean Wasabi coins' and they are blocked by the government, since they are on a blacklist.
• Profit (?)