I would not be surprised if Altcoinstalks owners/operators take a similar decision to theymos with regards to banning mixer but it seems highly unlikely now for two reasons. First is because the so-called crypto friendly US administration are making decisions. Second is because if they wanted to ban mixers they probably would have done it around the same time but they did not. As a precaution, the owners/operators might consider a ban on mixers or at least keep their options open.
In fact after the mixer ban here, I believe they tried to make it more accommodative to the new users who were joining it. It was an opportunity to increase the traffic over there and i think there was a change in the traffic stats in the following months.
The only way I would see them banning the mixer would be on the request by the law enforcement or some lawsuit threats.