My personal take: conservative men are obsessed with a toxic concept of manliness, and hold it as a monolithic and primary value, which is why they like to fall in line under large, angry people.
LGBTQ+ people confuse them, there are women who act more like men, and men who act more like women, challenging their conceptions.
Since, as a whole, conservatives reject introspection the challenge is interpreted as a personal attack.
Yes you read that right, conservatives feel that gay people just existing is a threat to their identity and lash out.
Almost all of it boils down to ‘How DARE you force me to question my worldview!?’