[esja]

Lia Thomas has XY chromosomes, always has, has benefited from their advantages, and continues to do so.

Everyone knows DSDs exist, but most of the time they are brought into this debate, they are merely a rhetorical device rather than any real attempt to address the specific situation. One of my close relatives has Klinefelter's, and I can assure you he finds this sort of thing extremely upsetting.

[boppo1]

Upsetting in which manner? The support of "xx doesn't define a woman" or vice versa?

[esja]

I think he feels like a prop for someone else's agenda. Imagine living a long life with congenital issues that seriously impacted your physical development, made you infertile etc., then suddenly loads of people are talking about your condition. But it's rarely in order to benefit you, and very often just a sort of debating tactic, to advance the goals of XY people who don't share your condition at all and whose goals you disagree with. I would also find that upsetting.