Look at the feminine qualities women are 'supposed' to have.
Being passive, being kind, not questioning, not confronting, being submissive, gentleness, sensitive, empathetic, self sacrificing etc...
Women who don't just fold and accept the narrative that transwomen are women are not conforming to this ideals. In doing so they are inadvertantly just by challenging, questioning, not self sacrificing, self advocating and being vocal are all traits associated with being masculine.
If we have a bunch of people - both trans people and their allies who strongly believe in gender stereotypes then women who don't follow these and are non-conforming but stating they are absoluetely women are threatening to the very concept of transgenderism by their very existance. (Irony klaxon).
They can not be allowed to act 'out of their lane' for this reason.
This is before you consider that the idea of 'being kind' is wholly one dimensional and only kind to one group (transpeople) and are utterly dismissive of how it might not be kind to others. This also can't be seen, because again it undermines the whole narrative they are trying to push.
The whole reaction is one of a cult that tries to silence, crush, erase, discredit ANYTHING that remotely might be perceived as the slightest threat to its creditability. Its THEIR fear, that drives everything. Its the ultra defensiveness. Not simply the other way round, with women unfairly and irrationally being prejudiced.
This is why women talking can never win. Whatever we do, it will never be enough, because our biology and certainly acknowledging biology is unacceptable and will always be a threat. The complete erasure of women is the only outcome that possible conclusion point - this is why you get young women supporting the idea, because they still haven't fully had the experience of their elders and how your body won't let you escape this no matter how much you might try to fit it as well as nice woke young men who have been sucked up by frankly incel thinking that 'equality has completed' or even 'gone too far'. They just have complete blindness to numerous issues that women face daily - cos 'invisible women'.
All things lead to this conclusion point.
The problem with authoritarism is that reality is inescapable and injustices created by authoritarism will always eventually backfire as if you can lie about what everyone knows to ultimately be true, what else can you lie about? And this is why political parties pushing this will eventually implode over it and why the far right parties pushing other bullshit will eventually implode in their own time too - they only questions are why and how much damage gets done in the process. This is coupled with a parallel issue over economic fortunes and an inability of traditional political parties to adapt to changing economic conditions so you are getting parallel political effects - when you have economic crisis the public will always turn away from those they perceive to be failing and be more open to alternative narratives. It makes it easy for the existing political elite to see backlashes as one cohort rather than multiple backlashes - its a matter of convenience to suggest they are the same because it means they can continue to avoid some truths closer to home. Add in a splash of pride and arrogance and you have a bunch of people who can't possibly face up to the concept of 'actually maybe I'm wrong'.
What's notable on this thread amongst the women saying when they were in their teens / twenties that they wished they'd been male, is they've all expressed this point - "I was wrong". Funny isn't it? And what we recognise collectively is that Affirmation Only removes the time and space to come to the same conclusion we did.