Watching the opening ceremony, this comment jumped right out at me. Not the sort of thing you'd expect to hear about a female athlete....
https://www.bbc.co.uk/iplayer/episode/m0021d39/olympics-opening-ceremony
2:31
BBC commentator as the Namibian team goes past, mentions Christine Mboma (46XY DSD).
They did win a silver in Tokyo, Namibia, from the 18 year old Christine Mboma but then she had to stop for over a year and a half and take medication to lower her testosterone levels so since coming back she's nowhere near as fast, she's not here.
She's also not female ffs. Sounds like an admission of advantage in 2021.
Eligible for the women's 200m (and 100m presumably). Not the women's 400m after Caster Semanya I think.