Staffs were asked to stop advertising mixers
and maybe some well recognized, high contributed members of forum who potentially become staffs in future were asked the same too (my guess only), but globally on the whole forum, let's see.
We (staff) were asked to stop advertising mixing services.
Who in particular did you have in mind? (LoyceV maybe for only using his sig-renting thread?)
Pretty much all of us moved on to other campaigns, mostly other mixers, after Chipmixer shut down, but to me it doesn't look like anyone else besides those who were already staff was asked to stop advertising mixers on their signatures.