My stuff isn't really very interesting. 
It's all "waaaaah! 'Snot Fair!"
But it got me through a lot of "but girls don't do that!" reactions so it's probably too firmly ingrained to change, even if I could find another substitute for a backbone.
True equality means recognising an oppressed group contains all human variations, from living saints to absolute bastards, and lots of normal-ish people in the middle. As such, it's my duty not to deny the evidence of my own eyes, that, frankly, some people are awful, some of them being transwomen. Who are everything unpleasant said on all the MN threads I've been reading. But there's some pretty bloody decent transwomen too.
It's not an easy fix though, because, for sure, forcing all girls to do STEM STEM and only STEM is just as bad (worse maybe) as assuming they won't want to do that. The push for girls to do STEM really annoys me (although I read maths) because some of them just don't want to (e.g. my girls) and forcing anyone to do anything qua girl is just plain asshat wrong.
Some people don't actually get the idea that restricting opportunities based on gender is wrong in itself. They think the issue is just that we have the wrong stereotypes.
It's the same kind of pseudo-liberal thinking that excuses people who find it less challenging to assume that a girl playing with toy lorries is exhibiting transgender behaviour than to accept that actually, gender roles are not set in stone. Some girls like lorries, some boys like lorries, some girls like dolls, some boys like dolls. I like to hope this issue can be solved by more feminism.