It's sexual because it related to a prominent quality of one sex: badlness in men. If the genders were different and 'she' was called a 'skirted c---' it'd obviously be sexual harassment no?

Having something you can't change (or is part of your gender identity) be used as part of a harassing statement makes it worse than a usual insult.

> it'd obviously be sexual harassment no?

No? I wouldn’t refer to that as sexual harassment, and I would be confused if someone did.

I wonder if there’s some cultural difference here (given other expressed confusion in this thread), in my experience “sexual harassment” refers to harassment of a sexual (intercourse) nature, not a sexual (sex — or gender I suppose) nature. So referring to someone’s genitals could be sexual harassment, but referring to someone’s X or Y chromosome wouldn’t be.

(If you said “short skirted” to imply promiscuity, say, then sure. But if you said “dangly earinged” then definitely not despite dangly earrings probably being more associated with women).

But alopecia, although affecting more men, also affect some women so it's not an exclusively male characteristic..

Neither is wearing skirts or dresses. Some men wear them happily by choice, but it’s still seen predominantly as an expression of femininity. Social and legal rules aren’t built to be true without exception. Once as a thought experiment I tried to determine what characteristics you could use to say unequivocally someone is male or female and it proved to be impossible. There is an exception to everything, so it’s best just to ask or be told.