That actually makes sense. MC says that he was taught to fight purely as self-defense, and fighting the jocks in Episode 2 is completely avoidable, on top of being totally unnecessary. That's why he's initially conflicted about fighting them, and it becomes a Major Choice.
Fighting Caleb is even more unwarranted. There's no real threat, it's only about saving face and showing you aren't a baby DIK. And the same thing happens with Tommy in the next episode, fighting him isn't needed. The only contrast to all of this is fighting Troy in the first episode, where MC has no qualms about kicking ass because his precious guitar was stolen.