All of this, plus he's also projecting his own personal history on everyone else. When he was constantly bullied at his old school, the moment he started getting power he sought revenge. He fought back. He only ever kept his head down when he was forced to by someone still stronger than him, and he never joined or agreed with the people stronger than him.
Now that he's the strong one, he expects everyone else to behave like he used to, and can't see that his legitimate grievances give some people real reasons to actually sympathize with him. He has no idea what someone with power genuinely buying into his complaints looks like because he's never seen it before, from either side.
Now, with yesterday's update, that critical fourth category just might be back. It depends a lot on one still unanswered question: can John copy Seraphina's ability? I suspect that, at least if she's careful about it, he can't. He has to see an ability being used before he can copy it, and I think seeing the before-and-after of a time stop wouldn't count. The actual use of the ability is too sudden and instantaneous to perceive. If he sees her use Rewind, though, that could be a problem, especially if he can get the generalized "time manipulation" ability from it rather than just the specific application.