This is something I’ve long wondered about. I had (note the past tense) a friend who was absolutely convinced that a Tory government/Brexit/impending fascism meant we were all going to end up dead. He also bought into the idea that trans people were under attack, that democracy is under attack, pretty much everything was under attack, really. He was utterly hysterical about it.
I struggle to understand where this paranoia comes from but I do think there is a cohort of people, mostly younger but not all, who genuinely cannot understand or bear to hear an opinion other than their own. There is no nuance, no middle ground, there is only good and pure, or evil and violence. They don’t know how to debate or rationalise or even come up with their own opinion by looking at all facets of an issue, so they allow someone else to tell them what’s right then cling on to it like a religion.
Of course, as soon as you ask for an example or explanation the argument falls apart and that’s usually where the hyperbolic namecalling comes in but it absolutely does not help when people who should know better are pushing the “under attack” narrative, presumably to prove their own good and pure credentials.
I think there’s also quite a lot of kids who have poor social skills, who live online in pastel anime worlds etc, so it’s hardly surprising that they struggle with the real world. They don’t fit in, they feel “othered” and easily swallow the “You’re hated” line as an explanation for why they feel like outsiders.