But this guy says it, and he’s defined himself to be the sole authority, so that matters more than any number of biologists.

Every argument they come up with has been refuted in past threads, and they just dismiss anything they disagree with as irrelevant, but treating tenuous sources like a supposed screenshot of Imane Khalif’s SRY test originating from an obscure site that’s never been republished by a mainstream one, even if they’d been calling for her to be barred from future tournaments based on no evidence so would love to vindicate their stance with test results.

It’s not worth your time to engage with them in good faith.