He does not ban users blindly through an algorithm, he gives them many warnings in advance that they are violating the rules, and then the people who do get banned are clearly banned for cause, often for taunting.
There are people who take liberal views here, but they are expected to defend their positions articulately, preferably with Constitutional, federal, or state law citations. Respectful disagreement is welcomed.
He does not ban people simply to suppress a point of view.
-PJ