There are whole families of confidence games which rely on convincing the mark that he is about to cheat a third party.
I think the same pattern is why the subculture keeps spawning scams and gurus. Yud teaches in HPMOR that intelligence is the ability to predict the future and manipulate people and the best person is the most intelligent, so if you want to be his disciple, you try to find someone you can manipulate. The idea that you could work together with your community to shut down that pattern of behaviour and expel repeat offenders is alien to them, and most of them have trouble with the idea of being honest about what you want.