Most of the users in the forum don't really know the drama behind the ban of mixer and the only thing they know is mixers were used for money laundry and for that it is a crime and it was ban here and others. But I think it is not only that part of the story that brought down the banning of the mixers. And we don't know how the structura arrangement between the Law Enforcement Agencies and The President. If the Executive Order was used to pardon some criminal elements in US by the newly elected and sworn in President (Donald Trump) then, the Order can also be used to bring back mixers to the crypto world.
And if mixers are still active in the Altcointalks Forum then it is not banned entirely in the crypto community but only in the bitcointalk forum and it community. So people can still use it legally in the other forum (s).