@SusannaQueen
I'm not sure what the issue is? Isn't a third space the best arrangement? Yes, biological men will win in that category, but at least it leaves the women's category to females.
No, it doesn't. People can still identify into the woman's section, this was, specifically, a non-binary category. afict by the names, there were some OFAB NBs in the NB category.
As PPs say, there will, at some point be major races where all three categories have records held by one sex.