because they seemingly didn't lift a finger to help a fellow strange person
Fellow strange person is an odd way of putting it. I think you're conflating two issues.
Plus he had depression, cut himself, probably had tried to kill himself, was very upset about not having a girlfriend, etc
This has nothing to do with being an outsider - (I'm assuming that's what you mean by strange) - it's mental illness.
Think about it this way: you're here because you have PTSD, I'm assuming. If you were in the middle of a bunch of rough symptoms, would you be capable of noticing that someone else in your sphere was in need of crisis intervention? If so, you're a better human than I am, certainly.
But I feel like if ostracized 120lb kid with lots of issues is hurting badly, the natural people to support him and befriend him to make him feel not so alone are people like the equally skinny effeminate theater kid (Hogg) or the bisexual girl with the shaved head (Gonzalez).
Somehow, this achieves equal-opportunity offensiveness. So the kid weighs 120lbs. Take mental illness off the table for a second, because there's nothing about the other two that says 'mental illness'. What you're saying is that the student who looked different on the outside, because he was skinny, should have been helped by other skinny people and/or people who are not heterosexual? People who shave their heads?
I understand what you are trying to say, I think - you're saying that the other outsiders should have reached out to him. And I'm saying that:
- you can't assume those other students had 'outsider' identification, just because you think they look like they should.
- if they did all have internal struggles with mental illness in common, it's not at all logical to presume that other people struggling are capable of putting on someone else's oxygen mask first. It makes more sense to say the well-adjusted students should have reached out.
- "equally skinny effeminate", "bisexual girl w/shaved head", "depressed, self-harming, suicidal-thinking"...none of these things equal "strange person". Catch up, it's the 21st century.