I think most people still don't understand what led to this decision.

Maybe putting things another way might help.
The Sinbad mixing service was shut down by authorities because the service was allegedly used to clean stolen bitcoins. But the owners of the service were not caught, and it appears they continue to operate the service on the darkweb.

Now you would say: Then Sinbad should be banned from advertising.
Yes, that could just be the rule. But, what would prevent the owners of Sinbad from opening the clone service and advertising on the forum again?

Note that the steps of Sinbad's owners are under the surveillance of the authorities.

This could cause serious problems for the forum, and for the users of the forum. Some, without knowing it, could see their lives ruined the day they decided to visit a country and at the airport they were charged prices, because of a simple signature on the forum.

As it would be difficult for the administration to know which mixers were associated with the former owners of Sinbad (or other services that may be closed), it took the decision not to authorize anything related to the mixes.

Perhaps @theymos, in an emotional way, was too radical in his first approach to the subject, but he has already explained that people can continue to talk, as long as there is no clear promotion of these services.