If all mixer related threads are going to the archive, there should not a problem if members are adding links to past threads regardless of where they were in the forum. I think there will be a problem if members try to circumvent the ban by trying to use words that could be deemed ambiguous especially if it involved the member accepting payment from a mixer for doing it.
There will hopefully less spam from 1st January 2024 onwards.
Also I should point out, it should not be ban-worthy to link to a closed mixer's ANN thread. Or actually to any post in the ANN thread that is not advertising to use the mixer.