The problem is that people think a trans person is someone of one sex who very badly wants to be, to be seen as, and treated as, the opposite sex - sometimes so badly that their mental health depends on it.
That's no longer the definition.
We now have this indefinable thing called "gender identity", which many people insist we all have, which is some nebulous idea of what sex we "feel like" or "identify as", regardless of the fact that "sex" just means which type of body you have. To "feel like" a sex requires you to buy into the idea that one's sex also dictates feelings, characteristics, personality, femininity or masculinity, etc. Which it doesn't.
So a trans woman has always been a woman, regardless of whether they ever had any gender dysphoria, were masculinity personified their whole life, etc - if they say they are a woman, they are a woman. Yet cannot actually say what a woman is.
There is a lot of logical inconsistency, dishonesty and refusal to answer basic questions.
Whereas the gender critical feminists believe that gender, as sex role stereotypes, are largely harmful, and that women are currently, and have been historically, oppressed because they have female bodies, not because of how feminine they are.
Women are a class of people who are being killed at a rate of two a week. And this has been the case for as long as i can remember. It's background noise, it's not a cool cause, but it's happening. Because they are female and because of the disgusting misogynistic shite men are being brought up to believe about women.