I've lost friends. People I had long deep relationships with who I trusted more than anyone.
One is a woman who is lesbian, and I thought we would find ourselves disagreeing maybe about extremes but that she would absolutely believe in a feminism that centres those with female bodies. I was wrong, and she 'came out' as trans-masculine soon after.
I have other friends who identify as bi, queer or lesbian who absolutely seem to believe in need for preferred pronouns, transpeople as the most oppressed, TWAW.
Some are autistic - and I think that matters. I'm in a number of groups that affirm and accept that autistic people are most likely to the trans and that listening to austistic people means unquestioning agreement that a child can know that they are actually male/female and that as parents we need to respect and support that. Interestingly one of the reasons I think this is a massive safeguarding problem is fear for my autistic daughter and her peers who are most likely to find society confusing, puberty distressing and who always, by definition, have communication barriers.
One friend I believe doesn't know what to believe, except she wants a strong relationship with her daughter who announced, around the time the father announced he was actually gay and was moving out, that at 13 she definitely isn't female anymore. I'm sure the suddenness of becoming a single mother working full-time as well as studying has also been relevant to her not seeming upset by this whole thing writ large.
I think Stephen Whittle came on a few years back to answer the 'where are all the transmen' question by stating that they are all off doing manly things so of course aren't on woman-forums. I'd say a lot of women are so busy just coping with daily life that they haven't really thought much about the implications of male bodies in female spaces.