Occasionally I'll be exposed to rot at the core of wikipedia - spooks and smug hypocrites who conflate "defending truth" with "deleting or trashing everything that goes against my worldview" - and be forced to log on. If that sentiment is a complete surprise to you, I suggest researching Philip Cross vis a vis Craig Murray (if that hasn't been scrubbed from the internet), and tracingwoodgrains' article on a wikipedia admin.
Oh no, the problem is self-sustaining! And even worse, beyond citogensis, bad faith actors will train newcomers to mimic that behaviour, tricking them into seeing it as good faith and just. I'm sure that's not lost on some of those who steer our culture here.