Oh indeed, but I think there is something peculiar to terfs that you don't see that much elsewhere. They're not just fervently believing some crazy shit. They're taking a cultural practice that's already widespread outside their movement, and fervently believing that it's some ironclad law of the universe. That's why they believe the science is on their side, and why they don't even need to check. And why they think that everyone, even their opponents, secretly agrees with them.

I don't know that they're more dangerous or more far gone than other flavours of crazy. But they're certainly.. well, they're certainly something.