Would that, in your opinion, have a chance to be reconsidered to advertise in the forum?
I guess it will be accepted by theymos, but he is the one making the rules (he said about KYC, not about "blockchain analytics company", so I don't know if it is treated differently or not). Because if I would be the one to decide, I wouldn't ban mixers. However, I wouldn't start running a centralized forum in the first place, so I am not the right person to make that decision.
I just noticed the part of theymos' post that had "not requiring KYC" indicated. OK, then how about if a centralized entity or the BitcoinTalk community set up and operate a coordinator for Wasabi which collects fees for coordinating CoinJoins. If the administrators of the coordinating service decides to advertise in the forum, would such a service be allowed?
I believe it's debatable, but it could be reconsidered. Running a coordinating service could be part of the evolution of Bitcoin mixing/tumbling.
From OP,
Why would it be forbidden to advertise a coordinator? Wasabi is already allowed because it's non-custodial and a coordinator is a part of that setup so as such I don't see why it would be forbidden. Only would it be a problem if the coordinator took funds of the coinjoin into custody.