Didn't you try this last night?

Answers still nope, it's the gamete producing gonads that define it. Hit a biology book. Doesn't matter if they don't work 100% right.

For biological sex to be completely binary 100%

You are either male, female, or an abnormally developed version of one or the other. You get the odd gonadless human, but they won't have a sex.

The intersex people do have a binary Y/N. It's 'were you born with ovaries or testes?' They aren't some new kind of sex just because they have anatomical abnormalities.

Why the hell TRAs push this intersex thing is beyond me. 'Transwomen' are a normally developed male in nearly every case, not in any borderline category. I suppose it's because they want to claim the cosmetic work makes them actually female for mental health reasons and as an attempt to persuade society they are actually laydeess..

It doesn't. You don't have female bodies, 99% will never pass for female and you have normal male criminal behaviour. Every reason to be wary of a man applies to a TIM.