It sounds like you’re asking why assholes act like assholes. It’s a question as old as time

Oh, I completely agree. It’s vile. That’s just how thoroughly entrenched the homophobia is in “traditional” patriarchal groups. Patriarchy doesn’t like the queer because our very existence undermines the premise of their entire power structure. This is also the same reason that most of these chuds don’t care much for the neurodivergent. We don’t fit into the status quo, typically.