yeah I guess the person could've not known but I think considering they specifically bought it up to ask my view knowing I'm gender critical they probably omitted that on purpose.
I think most people, including trans rights activists, genuinely don't know that Semenya is 100% male.
The mainstream media go out of their way to make sure people don't find that out.
Sure, a trans right activist who knew no doubt would omit it on purpose, but I certainly would not ever leap to the assumption that a trans activist knows what they're talking about in general, and absolutely not in this case.