I don’t trust other men to respect boundaries. If another man is only friends with my girlfriend because he wants to fuck her then he’s already the type of man I wouldn’t trust not to make unwanted moves.
She might not reciprocate but that’s not what I’m worried about in this scenario.
In my experience it’s easy to tell when a guy is only being friendly with a girl because he wants to fuck her and when he’s genuinely bring her friend.
It’s not misogyny to think other men would try to fuck your girlfriend. Especially if she remains in contact with someone who is only her friend because he’s trying to fuck her.