system
A chat on subreddit /r/NoStupidQuestions
human
Ask where he is getting the ideas.  It is unlikely that he just decided this himself.  It is more likely that a friend or something he is seeing in social media is telling him this.
gpt
I think to a large extent this may be an act of rebellion.  If he sees the acceptance culture as the norm at his school, which it sounds like it may be, then he is probably taking the opposing stance just so he can be "unique".  

Tbh I think we will see a shift to the right wing with the younger generations specifically because of this.  If right-wing becomes the counter-culture I think that a lot of young folks will gravitate towards it