My problem with "trans women are women" and "trans men are men" is not with calling them women and men, respectively. In situations where someone's bio or birth sex is not necessary, I usually try not to misgender people. I know it's technically incorrect terminology because words like women refer to birth sex, but whatever. Adults can be called girlfriend and boyfriend, so why not? I also recognize that sex dysphoria is a thing and I am fine with people transitioning. I also have dysphoria and plan to transition.
The problem is when some trans people try to change the rules around sex-based things, and use statements like twaw as an excuse. Gynecology stuff should still be called women's health (or maybe female health). Calling it "menstrator health" or "uterus-haver health" is weird and annoying and dehumansing. Likewise, single-sex spaces should stay about sex, not gender. I would make some exceptions, though. Trans men (ftm) should be allowed to go on men's teams, especially if on testosterone. If a passing trans person needs to go pee and no gemder neutral or single occupancy bathrooms are nearby, it's ok for them to go to the bathroom of the opposite sex. If they truly pass, going to the bathroom of their birth sex will probably cause people near them to say "you are in the wrong bathroom" anyway.