Aaaahhhhhh, and also, everyone was kinda against Roman when he was being HELPED by Janus when it came to admitting that he wanted to go to the callback, but now everyone is against Roman again for NOT siding with Janus. Like, he's probably looking at Patton all like 'which one is it???'
See, the reason Roman is so upset about Janus being accepted is because it’s going against those still-same morals he was going on about this whole time. He’s trusted Patton since the beginning, since the Split, to know what’s happening. He’s trusted in Patton’s judgement.
But now he’s realized that Patton isn’t infallible, and the thought of it terrifies him. Because, just like they’ve always been told Deceit is bad, they’ve been told that Roman is good. That he’s the hero, that he’s the prince, that he’s beloved and right and perfect.
But Patton is admitting he’s been wrong before. If he’s wrong about Deceit being bad, who’s to say he isn’t wrong about Remus being bad?
Who’s to say he isn’t wrong about Roman being good? Being the hero? Being needed? Being loved?
So of course he’s angry. Of course he doesn’t want to trust Deceit, especially after that Remus jab.
After all, if the one they all called evil is good, what does that mean for the one they all called good?