I don’t know enough mma people to say, honestly. I know jiu jitsu bros, and they tend to be extreme in either direction, but more commonly very cool with women who also do jiu jitsu.
My sister did a fuck ton of martial arts and some combat sports (no MMA), and is pretty thick skinned about sexism. According to her, the same is true for most martial artists and wrestlers, but boxers are more of an even mix.
Edit: maybe it scales with head trauma?

She looks a lot like my stepmom