Ragusa I thought it might be helpful to look at the first past of one of your posts a bit:
"I am not into biological determinism and I do believe some people need to change gender or might prefer to be defined in non-binary terms. That is fine by me and a social fact."
By 'biological determinism' do you mean the idea that being born male or female shapes characteristics like personality and interests, eg. women are nurturing, passive, like the colour pink and wearing make-up? If so, gender-critical feminists would absolutely agree with you that it's wrong. Where we differ from the trans ideology, however, is in saying that it's wrong for everyone. If you're a man who likes stereotypically feminine things, that doesn't make you a woman. People shouldn't be put into little pink and blue boxes. Practically everyone, according to the trans standpoint, is non-binary, because nobody has a completely stereotypically masculine or feminine personality.
I, and many others on this forum, don't believe in 'gender identity' as an innate, objective thing. Gender is a social construct, so it can't be. People should be able to present themselves however they want, and have whatever interests they like, without saying that it makes them the opposite sex if they do so.
The transactivists conflate sex and gender, and say that even if a man just declares that he feels like a woman inside, and does nothing else then he is a woman. He has always been a woman. His penis is a female penis. He can use women's changing rooms, women's shelters, women's prisons. He can win women's scholarships and compete on women's sports teams. His feeling is more important than the material reality of his sexed body, or his lived experience of decades of male socialisation.
This is what we object to - not the idea that a minority of people with persistent gender dysphoria might feel more comfortable and live happier lives with hormones and surgery. The erasure of women as a category. If you can't define 'woman' other than the circular 'anyone who says they feel like a woman' how can you address sexism?