In short, we can talk about its existence, we cannot mention names. Or can names be said without there being a direct recommendation?
For example: "Yesterday mixxptoabcd was closed by the US authorities, follow the news..."

It will continue to be OK to discuss mixers in a general sort of way. Just don't direct people to mixers: don't link to a mixer, don't link to a directory with links to mixers, don't tell people to "Google ASDFmixer", don't link to a mixer's telegram, etc.

Theymos, are we able to mention mixer companies? Can I say: Bitmixer was the first bitcoin mixer in history, chipmixer was the most profitable company, Guys, does anyone remember the time when mixers were legal?
Will we be able to mention company names without suggesting them to other people?

Of those three examples, the first and second would be OK because they don't direct people to a specific mixer.