Then what's the point of having to check them for "taint"? Would UTXOs received from a Dark Market dealer pass through their coordinator?
If Coinfirm deems this "naughty", it will be rejected. The point of discriminating against some "naughty coins" is to create the perfect environment so that large corporations like Binance can justify requesting all that ton of KYC info when you make an account, which in addition is extremely useful for a surveillance state.
Quoting myself:
Blockchain analysis companies are the practice of "being guilty until proven innocent". Living under a state which can put me behind the bars because I might be involved with some activity, with absolutely no scientific evidence is totalitarian. Literally everyone in the blockchain is potentially involved in some illegal activity.
But it's just genius. They've convinced the world that it's needed. A weapon to intrude into people's liberty and having them voluntarily handing it over is just the ultimate weapon.
But as we know, most Bitcoiner doesn't bother run full node even when they have skill, experience or resource to do so.
Additionally, they don't even have a guide which would make setup easier for the average person. The only thing relevant with that in their documentation is this:
Is the Backend's (Coordinator) code open-source?
Yes, you can verify the code on GitHub
Extreme desire for decentralization there.
So, as far as I understood, Wasabi analyzes who sends coins for coinjoin to prevent coins from so called 'blacklisted' addresses, this is where you are identified, right? But once you coinjoin your coins via Wasabi, does Wasabi still know who you are? Sorry if my question sounds dumb.
Wasabi wallet (the software) doesn't know who you are, and in fact it uses pretty decent techniques to protect your privacy like block filtering. But, the company responsible for the vast majority of WabiSabi coinjoins (which as far as I'm aware of, runs the only public coordinator), uses coinjoin fees to fund the operation of a surveillance firm, which will indeed spy on you.
That's 100% right, chain analysis is not accurate, so I don't understand the point of their proactivity in this case.
Maybe. I say
maybe, Wasabi team was offered some good amount of money for that. This is complete conspiracy, but I say maybe.

User n0nce had sent them a letter, you can grab a snack and read their funny answers in here:
Wasabi blacklisting update - open letter / 24 questions discussion thread.