No it isn’t. The gender categories called women and men are applied socioculturally to a lot of people who identify as women and men, respectively, but who may vary quite a bit biologically within their group.
To take another example, XY-chromosome people with androgen insensitivity syndrome and female-bodied external anatomy, who were identified at birth as female and who self-identify as female, are women, even though they have a Y chromosome. Men with partial androgen insensitivity syndrome who self-identify as male are men, even though they may have feminine-looking breasts or undescended or underdeveloped testes due to their condition.
Note, by the way, that none of this insistence on respect for people’s individual gender identity is in any way stifling medical clarity or scientific precision or anything like that. In circumstances where people need to distinguish between details of anatomical or genetic characteristics, they are allowed to talk about them.
But in ordinary social circumstances, it is the height of rudeness to put unsolicited gender-identity labels on people who aren’t already using them. If somebody self-identifies as a woman, it is impolite for you to speculate on what “kind” of woman she is, biologically, and it’s even more impolite to state or insinuate that you don’t consider her “kind” of woman to be a “real” woman. (And the same for men, natch.)
[QUOTE=adaher]
Either transgender women are women or they are not women. If they are women, they should just be called women. No quotes, no transgender, just women.
[/QUOTE]
In ordinary social interactions, as I said (ETA: and Miller before me), that is correct. But in general discussion of populations overall, there is no need to pretend that various distinguishing characteristics don’t exist, as long as you don’t use rude or disrespectful ways of describing them.
It is not rude to acknowledge that some women are mothers, and some women are infertile, and some women are postmenopausal, and some women are transgender, and some women are asexual, etc. What is rude is insinuating that any such characteristic somehow invalidates that group’s gender identity as women.