My thought is that you would have to have some real motivation because that's about as hard a job as I can think of in a forum of this size. I'd suggest frustration and burnout. Herding big cats is easier than moderating a popular forum--much easier.Suppose you were a Tesla troll and suppose you wanted to disrupt the TMC community.
Now suppose you used the forum rules and mods to sow partisan discord.
I am not privy to the data and evidence; but I would like to see the hypothesis tested.