Radicalization, schmadicalization.
My problem isn't really with who uses what toilet - although I do have some concerns about that, I think by and large it is self-regulating: people who 'pass' will probably not encounter a problem and nor will the people whose toilets they share.
My problem is with arguments about 'men brains' and 'lady brains', and the idea that children who behave in certain ways - even at the age of TWO - are 'trapped in the wrong body'. The trans narrative unthinkingly adopts, endorses, and strengthens, the idea that gender exists, that it matters, and that it must fit the body it is in. At worst, it is sexist and homophobic.
What are we telling our daughters, when we tell them that Jack is now Jill and must be acknowledged as such? We're telling them that Jack 'felt like a girl' and 'was a girl', because, presumably, he has some girl-feelings that are the same as theirs. So we're telling them that their feelings, responses, preferences and desires are fundamentally located within their very girlhood, rather than just 'who they are'.
We're telling them, when 'Jill' then beats them on sports day in the girls' races, that 'Jill' is actually a better kind of woman than them, and their achievements within the context of their sex are now much less - and they have little hope of changing that.
When 'Jill' puts on makeup and girls' clothing, we're telling them: that's it. That's what makes a girl. Jack felt 'just like you', so he is 'just like you', and and that's what being a girl is.
If Jack transitions at university, and is on a STEM course, we're telling them, look! There isn't an issue with girls doing science - look at Jill! She's got there, why can't you?