[slg]

>those humans scientifically established (usually pretty obvious at birth) to have XX chromosomes

It is entirely possible your heart is in the right place, but this specific comment gives it away that you haven't actually looked at this issue too closely. There are "scientifically established" reasons why this issue is a lot more complicated than the anti-trans folks always make it out to be, even if we completely ignore the existence of trans people. Look up Swyer Syndrome[1] for example.

[1] - https://my.clevelandclinic.org/health/diseases/swyer-syndrom...

[aaaja]

CAIS is a better example. Even then it's overrepresented in athletic competition compared to the general population.

Swyer syndrome isn't a condition compatible with an athletic career because of the bone weakening caused by hormone deficiency.