There's nothing private about your sex when you wish to enter a sex specific space. He was competing as a woman, it's in the public interest, as well as the interests of fairness and safety, that people know he isn't a woman.
And the sex testing isn't in question either. We can test for sex. It's a simple one off cheek swab. You're pretending it's complicated and needs lots of deflective discussion. It isn't and it doesn't.
I thought at first that we were seeing arguments from ten years ago being lazily recycled. But now I think we are just seeing a very clumsy and dishonest attempt to continue to push the "if you let black women into female spaces then there's no reason not to let men in too" thing, while trying to deny that that's a racist position and indeed accuse people of racism themselves if they say that a certain black man isn't a woman.
Whatever it is, it's utter obfuscatory, deflective nonsense.