This being said... well, sorry to say, but "you know nothing, Jon Snow".
Imho mixers have their use for people more privacy conscious than you.

Of course, my initial part was a bit harsh, some points you posted are real and known. You don't (ever!) know for what is behind a centralized service, including mixers and imho CoinJoin coordinator too. Heck, even Electrun servers are spying on us nowadays.

But for some, taking a risk is necessary. I still remember a post from somebody who was struggling to hide his coins from somebody hollowing every move in his wallet and threatening him. Would you still consider a mixer bad in such a case?

Yes, there's always a risk that some idiots may consider those coins of you "tainted", a risk some are willing to take and some not. But the fact they may be govt honeypots?! Well, if the govt is after you... you better start using proper privacy coins instead of mixers...