TLDR - but are they saying that there are 0 differences between cis and trans women? I wouldn't talk about it unprompted or call someone a trans woman (that's like saying a couple is getting gay married, unnecessary detail), but to say there 0 differences and adamantly silence anyone that disagrees is classic era. Trans women cannot get pregnant, and while that may be an unimportant detail to them in someone's life, it's incredibly important to others.