to be fair women (gender) do not menstruate, it is females (sex) who have the biological bits and pieces to actually menstruate, give birth etc. a male person does not.
That's actually not "fair" exactly. That's incredibly biased.
Seeing as the word for "adult human female" already exists, which is "woman", and the word for "adult human female who identifies as a man" also exists, which is "transman", there's no need whatsoever to refer to either of these people as "people who menstruate ".
I mean it makes no sense anyway. Why choose that descriptor. Why not "people with ovaries, people with a vagina, people who gestate, people with a cervix, people who could have endometriosis".....
The dehumanising language list is endless, when the phrase "women and transmen " or even "females with all gender identities" will suffice.