I know the OP is long gone but I'm trying to flesh out a thought...
Women and trans women are supposed to be equal under the law. I see us as equal but obviously different. So, if we are equal (under the law), why can't I (AFAB) ID as a trans women?
sackrifice going back a bit you said:
However no trans woman can live as a woman. They do not have the same common ground as women, they are not subject to the same discrimination, health issues, job prospects or reduction in them, they don't take an average 20% pay cut, they will not have wrecked bodies from childbirth, brittle bones from an early menopause, reduction in pension if they took time away from work to bring up a family etc etc etc.
And I agree. So why can I (a FAAB) not ID as a trans woman? And the answer is because your statement would read:
However no woman can live as a trans woman. They do not have the same common ground as trans women, they (women) are subject to discrimination, health issues, job prospects or reduction in them, they take an average 20% pay cut, they will have wrecked bodies from childbirth, brittle bones from an early menopause, reduction in pension if they took time away from work to bring up a family etc etc etc.
Because we are equal (but different).
I guess what I'm trying to say is trans women are not women in the same way as women are not trans women - we cannot experience life as the other.