If, for example, a trans woman was permitted to perform as a female athlete I would agree this should not be permitted.
Why not? What's the difference between them and Semenya? They're both males who make claims to be female. Is it just that you genuinely don't believe Semenya is male?
Okay, ignoring the trans - which I guess is later personal cross-sex claims - what about some other male person who had been wrongly identified as female? Should any male identified as female at birth be allowed to compete? Does that identification have to be accidental, or would deliberate falsification be permitted? Do they have to have a DSD?
She has not fathered children don’t be so ridiculous. She has no penis for starters. I am aware that semen is produced by testes!
We don't know whether Semenya fathered the children. Lots of people keep repeating that factoid, without evidence. Annoyingly. Stop it, people.
But it's true that a large proportion of individuals with Semenya's condition can father children with the aid of artificial insemination. Semenya may have an underdeveloped penis, but has testes. So there's nothing ridiculous about the possibility of having fathered children. Many 5-ARD individuals have. So people speculated reasonably that Semenya may have done - quite possible, verging on likely - and this transformed into something we knew for a fact, which we don't.