I don't think theymos will stop Mixing companies to advertise their products in the forum, and the only time theymos can do that is when a president strongly confirmed that the mixing is a scam
I've only once seen theymos ban a signature campaign:
129 users who were wearing a yobit signature and had at least 1 good report against them in the last 14 days are banned for 14 days. All yobit signatures are wiped. Signatures containing "yobit.net" are banned for 60 days.
Even though this exchange had many scam accusations against it, that's not why it got banned. After 2 months, it continued (with slightly less spam).