-There should be a process (maybe informal PM "warnings", followed by Official in-thread Warnings) for all bannings outside of spammers and overt, malicious trolls. The same process should stand for other "heavy-handed" mod actions (thread locking, post deletions, etc).
-Ideally, there should be a third mod who is a good example of a well-behaved, materialism-agnostic member, to represent the perspective of the forum's dissenters in the mod forum (and if you don't have a mod forum, where mod actions can be discussed and debated before being taken, I suggest one.)
-"Us vs Them" childish, tribalist thinking should not be encouraged, if not actively discouraged, by forum staff.