This thread connects to a few thoughts I have been having, not about parenting but about being young.
I (just about!) remember being young. I wasn't a goth but in a similar subculture so let's use goth as an example (I had enough goth friends to know it was the same for them).
What I realise as an adult looking back was there was such an undercurent of policing and judging. Were your clothes right or were they an outsider's view of a goth? If they were right, were they right because you were expressing your actual tastes, or just following along? Was your Victorian silver pendant actually victorian (cool), modern from a goth specialist shop (acceptable) or from a high street shop (not acceptable). Did you like the right music? Did you know the album tracks as well as the hits? Did you have the first album? Did you have the unpopular album? The worst possible thing was to be judged as not real, as not quite getting it. A plastic goth.
I see so much of this in the young trans people and TRAs especially the female ones. "No one else understands us. It's us against the world. But are you really one of us? If you won't go as far as it takes, if you have boundaries, how can you say you really care?"
I think it's a feature of self-defined subcultures. The desire to belong pushes people to extremism to prove their right to belong. Not too bad when it's to be extremely gothy (although actually yes bad because the dynamic of enabled predatory men who had managed to establish themselves as long time scene members to exploit young women and adolescent girls who were attracted to the protected status that being picked by someone with unimpeachable goth credentials gave them) but bad when it's a subculture that seeks to prove identity through serious medical body modifications, redefining women's personal risk awareness and boundaries as bigotry, and promoting the dismantling of sex-based protections and social analysis.
I know many of the women caught up in this will feel discomfort about the gap between what they are supposed to believe about trans women and their own experiences of being a woman and of trans women in women's company, but instead of trusting themselves that something is not right, they will be blaming themselves for not being able to overcome this transphobia, and turn that into fighting the TRA fight even harder so no one guesses their secret shame. They will be too scared to ever acknowledge it to each other, so each girl believes the others have no doubts.