Who knows, it could be temporary. I honestly think it's pretty likely that they will start considering following bitcointalk's steps if they get into authorities' radar-- you know, like being mentioned on their website or something.
I'm pretty sure that the Altcointalk admins are very much aware of what's happening here they clearly stated their stand that they will welcome mixers promotion in their forum, this is a welcome development for the mixing industry and for posters, they could only follow Bitcointalk's stance if there at least two or three mixers that become notorious as money launderers so far all the mixing that's going to make a campaign there next year are all doing good and there are no big issues like what happen to Sinbad.
We never know if Altcointalks become the marketing platform of mixers, we'll know that in the first 5 months.