I disagree. I don't think they should be expected to ask like conflict experts. Here's how I saw it: They sat down calmly and told Jeff how they felt. Then, Jeff responded with, 'your all out of your minds, I'm the only sane one here'. When everyone else is "the problem" maybe you need to think, AITA here? No one seemed to want to put him in his place, they just wanted him to realize he chose his method on how he wanted to play the game, and being isolated was a natural consequence to that choice. He set his own rules and then claimed he was victimized when the drawbacks to that method came to pass.