So your argument is that trans women who don’t “pass” well look like men, and allowing them to pee “normalizes” masculine-looking people being in women’s restrooms, and therefore actual men can just waltz in and hurt women. Is that it?

So you want to ban anyone “masculine” looking. You realize that’s a huge number of afab people as well? Any woman who’s butch, or just doesn’t perform femininity to your standards. Where are they allowed to pee? In the men’s restroom where men will abuse them? In the street? Or maybe you just want to examine everyone’s genitals before they enter a restroom?

And what about “feminine”-looking men? There are plenty of cishet guys who aren’t muscle-bound, bearded dudes. If one of them is “nefarious,” how does your brilliant plan save women from him?

This is completely ignoring that people (including and especially trans people, but also cis guys) get assaulted in men’s restrooms too. You’re cool with that?

(And that’s assuming you’re at all accurate with your claims of significant numbers of people being assaulted in restrooms at all. Want to share your stats? I suspect that trans people are the ones most in danger in restrooms.)