[charlesarthur]

You need to read up about XY 5-ARD (the condition Caster Semenya has and Khelif surely has). Being XY with active SRY means you're male. Khelif has admitted having the SRY gene (in an interview with L'Equipe). Males have very significant advantages (50% plus) in power sports such as weightlifting and, yes, boxing.

Sex isn't "more fluid". It's entirely binary, but DSDs (differences of sexual development) can make appearances deceptive - so an XY male can be wrongly recorded as female at birth, especially in countries with inexperienced medics and midwives.

Phelps's records have all been broken. By other males, of course - no female is getting close to his numbers. That's male advantage in action.

[dwb]

Sex is “entirely binary”, except for the ways that it’s not, which you’re going to squeeze into your binary definitions? Scientists update their models and definitions when reality shows itself to be more complex than initially thought. In terms of reproduction, clearly there is quite a bit of a sex binary going on. It’s not nothing. But it’s certainly not everything either.

[enoint]

Under your rules, does an XY male who conceives and gives birth change category?

[thrance]

Khelif has an uterus, breasts and any other characteristics associated with women. Conservatives calling her a man is pure insanity and just shows how limited their perspectives are and how confused they are about the subject.

Used to be that they'd ask in bad faith "what is a woman?" to trans advocates, but maybe it was a genuine question? Because they don't look like they could recognize one if they ever saw one.

[Natfan]

and obviously the inability to properly "identify a woman" will lead to further discrimination against cis women who "don't pass"

i always find it very very interesting that trans men are always left out of these conversations...