I'll be honest with you--I don't even know how Chipmixer works myself, but that's mostly because I'm too fucking stupid to understand the intricacies of things that can be done on blockchains.  I've picked up some knowledge over the years, but I never really had the time or the "tech intelligence" that it takes to understand how a service like Chipmixer works.  I'd admit to other things I'm ignorant about, but I don't feel like embarrassing myself even more.

As far as advertising for Chipmixer, I get SmokerFace's point, but it's kind of the same argument that bitcoin is bad because it's been used to buy drugs and all sorts of other illegal stuff.  From a campaigner's point of view, signature space is just being rented out in the same manner as a TV station selling ad spots to anyone that pays.  If what's being advertised is a known scam, then I have a problem with it--but just because a scammer used a service to launder money doesn't mean the service is in the wrong.  Perhaps they should have checked those incoming funds....but I really don't know how they do things.