Well. I don't think mixers and kyc-free exchanges are crypto laundry services. They can be used like that, but they are not this.
It is the same as saying cars are a banking robbing machine. They can be used to do that, but that is not the best definition of a car.
I see what you're saying, but cars don't face a moral quandry as to whether or not they should help the bank robber. They just do as their told, which makes them more similar to something like Thorchain, to continue the analogy.
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.