I think that those coins associated to hacks shouldn't be accepted by any service.
This part I'm in agreement with, and its possible that some exchanges/mixers/etc. don't even realize they are laundering hacked/stolen funds before its too late.
I agree.
Hackers are too quick and they probably are able to move the funds and send to those services even before authorities realize.
Maybe a AI, automatic bots and automatic warnings could make those services react faster.
However, I don't see much discussions about that. Just kyc, seized services etc