Apparently…. And I don’t know if this is 100% accurate, the fighter was actually born female, with a uterus and all female parts intact but with a very high level of testosterone and XY chromosome… now I’m no scientist and would have to didn’t more time researching this to corroborate it, but I just can’t be bothered
I've heard some conflicting stories (with the same level of research done as you have) and that was the last I heard, that the 2 fighters involved in the uproar, are both as you described.
If that is the case, then it begs the question of why it is such an issue. There will be men with higher testosterone levels than others, yet they fight each other. There might be more to it that I am missing, but it is very interesting and I wouldn't want to be the one making the decisions on them both.