Once you start censoring, you will inevitably progressively censor things you were not supposed to censor in the first place. This is a precedent. Once you said yes to coin 'filtering' for three reasons that were deemed suspect or 'illicit', it gets SO much harder to say no to 'just one more' reason to censor for.
I've said this several times before, including in this very thread:
https://bitcointalk.org/index.php?topic=5286821.msg60219453#msg60219453Bitcoin is either censorship resistant, or it isn't. Anyone saying "Well,
I'm not being censored" is entirely missing the point. If Wasabi can choose to censor
some coins, then they can choose to censor
any coins. If
someone can be censored, then
you can be censored. As soon as an entity (Wasabi) has the ability to pick and choose who is and is not allowed to spend their money in certain ways, then your system is centralized, is not private, is not censorship resistant, and is not free. This is what Wasabi have created here.
The list of things they have admitted they will censor for is bad enough. It won't be long before that list grows, and there will definitely be other things not on that last that they will censor for and just not tell anyone about.
I'm also interested in the scenario (which will definitely happen sooner or later) where someone is allowed to mix their coins and then afterwards Wasabi decide that their inputs were tainted and they shouldn't have been allowed to mix them at all, since the document linked to above also invites you to inform them of any illegal transactions and states that they will fully cooperate with any investigations. Why would reporting an illegal transaction to Wasabi achieve anything at all, unless they have the ability to track those coins and are going to share that information with law enforcement?