I would personally be fine even if they were simply allowed again here with no Signature Campaign advertisement. Having multiple ways to enhance the Privacy level of UTXOs with out making some of the ways look like tools of crime is never a bad thing.
Would you ever trust a mixer again, after what's been happening in the past few years, though? I don't think I would, and frankly, I don't find the reason to ever forfeit the custody and privacy of my coins to some unknown entity, when there are solutions like Wasabi that offer significant levels of privacy for near zero cost.
It's a good thing there’s never been a problem with a known entity, so we only have issues with unknown ones.
The use of Wasabi for the purpose of anonymisation is easily recognised, and Coinjoin necessarily raises the AML score. At the same time, you have a mixer that has been working for years and delivers exchange-based coins to the user, which have no mixer origin.
The cost of mixing is not always a decisive parameter, but the degree of anonymisation that is achieved.