I believe the professors and administration are the main problems.
Students are just stupid and bored and do this nonsense because it is fun. Other times they spend their time scared of being cancelled for mispronouning or other silly things and it is exhilarating to let it all out.
I believe so because I read Nancy Rommelmann’s articles about the madness in Portland. The stupid kids rioting there are miserable all the time except when rioting, because riots are fun.