As far as White's toilet practices, my impression has always been it's a practical rather than theoretical position. And that if it became socially expected for transwomen to use the male facilities, or third spaces, that's what BW would do - it doesn't seem to be an ego thing, more about just causing the least fuss.
It's always worth questioning how impressions are constructed.
Many people refer to Blair White's video as proof that White risks being thrown out of bars for using the male toilets based on appearance.
If the video is watched it seems much more likely this was due to White filming men using the gents' loo and asking them intrusive questions.
When Fionne Orlander used the gents loo and was told by another male patron 'this is the men's', Orlander responded along the lines of, "I know, I am!" without issue.
When complimented for not using women's loos (and wearing a lovely dress) Fionne Orlander responded,
"While I truly do appreciate the kind comments & solidarity, it should not be considered an act of bravery for a male not to use spaces meant for females, the fact this is even response worthy says something.
It's a selfie in a toilet."
twitter.com/FionneOrlander/status/1196876559673647104