It was very obvious in that interview that Semenya was raised as a boy. He talked about the other sports he played - football, basketball and boxing. He credits his athleticism to his parents being good at sport - his dad played football, his mother played netball. Semenya didn’t play netball though, he played basketball. And he did boxing. I wonder how many girls did boxing? Very few I suspect.
He said that his testosterone gave him no advantage over women as if it did, he would be much faster than women, not just a bit. He’s just a pretty average runner when competing against men though.
Margaret Wambui, who got a bronze medal in the Rio 800m, has called for a 3rd category so he seems to have a bit more of a sense of fair play than Semenya.
https://www.bbc.co.uk/sport/africa/57239439
Semenya’s career is over. He won’t ever be able to compete against women and he’s not good enough to compete internationally against men.