Men get away with it because it isn’t shocking when they aren’t polite.
Exactly. Women are unfortunately conditioned by society to conform to male expectations and be kind to men, even if they find them threatening. How many women have been in situations where they feel unsafe with a man but smile at him or try to calm him or be 'nice' so he won't get violent? So many of us have had that experience, sadly. TAs get away with their behaviour towards women because so many women fear men.
That's why I am so skeptical of the transactivist narrative. 99% of it is aimed at women and women's spaces. Men's spaces remain sacrosanct. I wonder if David Bennett will be getting hate mail, rape and murder threats and be 'no-platformed' next time he wants to speak somewhere? I doubt it.
And even if he were, he probably wouldn't care. Older gay men have had to deal with much worse in their lives than transactivist tantrums.