Do you think there's a difference in dynamic between me attending a car mechanics course as the only woman, and a man attending a sewing course as the only man?
I do. There is always this what's the sauce for the goose is sauce for the gander element to these questions.
But it's not a level playing field. A lone woman on a course of men could feel uncomfortable. A woman only course which admitted man also could make the women uncomfortable (albeit in a slightly different way).
It doesn't always happen, obviously. And it isn't always that way round. I'm sure there are men who might feel uncomfortable surrounded by women.
But the majority of the time, it will be women who are made to feel uncomfortable. You only have to look at the gender debate; there aren't any men jumping down in case a transman shares their bathroom.
Or appropriates the word man. They couldn't care less.
That's not to say there should be rules about people joining clubs for the opposite sex.
However, the power dynamic is unequal. Therefore these situations will carry that dynamic with them.
OP, know a lot of feminists feel as though feminism should include men saying it is about the rights of humans. Equality for all.
I completely agree that a man can be a feminist ally, but as he lives in a man's world and not a woman's world, he will never truly appreciate what is like going through life as a woman. He can understand it intellectually, he can feel emotional about it, he can agree with all of it and be determined to help, and then he can walk straight out the door, leave it all behind and get an unlicensed taxi without a second thought.
It is that difference in experience that, to me, means there is a distinction between a male feminist and a female feminist, which is why I call a male feminist an ally, not a feminist.
It's not meant to be divisive, it's not meant to be alienating. It's merely an acknowledgement that women, really, really do know best what it's like being a woman.
Plus feminism goals will automatically produce equality, as a result.