Transmen are in many ways women, that's why girl's magazines like 'Your guide to Anal sex' Teen Vogue feature lots of articles by transmen. Because transmen, however they now identify, share biology, socialization with women, and a transman is consuming biologically female media (be it Anal Sex For Girls, Tumblr, Youtube channels, etc), as part of their transition, and you can only be a transman if you first start with female biology, which does in fact mean something.
You can pass as a man, have a male name, whatever it is you want to do. But that does not entitle you or anyone else to negate the word 'woman' in favour of 'pregnant people', 'menstruators', or any other such nonsense,.
Your 1 in a million identity doesn't change the reality of 'women' and 'men' as biological classes.