That's interesting with regard to the definition of women - so if they are legally, physically, hormonally, societally (etc) women, I wonder what it is that makes them not really women? Is it just that they were not born so? Or is it the chromosome?
Sex is more than just chromosomes, though that is an essential part of it. The key problem is that none of the treatments actually change real aspects of sex characteristics.
Taking a few oestrogen pills does not make any man hormonally a woman. It merely produces some feminising effects on the body. Women produce a lot more female hormones than oestrogen, and trans women take at most one or very occasionally two of these. A bit of oestrogen doesn’t cancel out a lifetime of male sexual hormones and physical development.
Surgery doesn’t make a man physically a woman. Breast implants and a surgical channel are not actual female organs by any stretch of the imagination. They create largely unconvincing cosmetic facsimiles of female body parts. Shaving off bits of your chin and having electrolysis doesn’t change your muscle mass or male physiology.
Legally documents like the GRC acknowledge that they create a legal fiction, not a fact.
Societally [sic]? Very few trans people “pass”, and everyone around them normally knows it. The pretence of believing so, is usually a kind courtesy. Does it mean a man is societally a woman, if everyone around him pretends he is, but knows perfectly well he is not?
This last point I suspect is the key one for all gender ideology, and points to why it is so authoritarian and totalitarian. It’s often a genderist point to argue that a woman who is someone who is “socially” a woman. But few trans women are socially women in pretty much all respects (some are - I worked with one who did, but she had had full surgery a long time ago). Most trans women now don’t have full surgery and don’t pass as women. So does it really count to be “socially” a woman if everyone is just pretending? Presumably not, so we must all be made to believe.
The rage of gender activists seems to be especially targeted at anyone who shows they don’t really believe, no matter how much they are happy to entertain the pretence (look at Kathleen Stock, for example).
Any old man on Twitter can be in practice as bigoted as he likes, as long as he goes along with the belief mantras. A woman who is happy to be kind and tolerant and supportive of trans people, but who doesn’t pretend to believe in the fiction, is absolutely excoriated. I suspect that this is why - it’s projection of rage at the fiction not really being reality.