If I have to constantly clean up after AB, then I will remove him.  This platform has stronger tools where I can remove people from threads where they don't belong.  I can keep users in the lanes where they belong.  If he disrupts one of your threads - I can take him out of it.  Of if I have to keep doing that, when I will have to visit a permaban.
Boards that are just preaching to the choir usually stay small.  He is the one that ultimately decides whether I remove knuckle heads or not.  The decision was reached via a staff discussion to remove the loons.  They don't foster dialog.  We will have a discussion among the staff about users like Artie and Danoh.  Meshak is gone, because she became a needless distraction.  I do suspect if they are a persistent problem - like Meshak they may wear out their welcome.