From a biological perspective, the women being banned here are not just men and as far as I'm aware cannot realistically compete in the men's division any more than any other woman. Practically these changes bar women athletes with certain medical differences from competing in the Olympics.
I'm not an expert so idk whether that's fair or not but that's what this decision is doing.
To be fair, that could be said of many other medical conditions as well, especially chromosomal abnormalities such as Down Syndrome. Many humans, from the moment they are born and through no fault of their own, have virtually no hope of ever competing in the Olympics let alone winning, just because at such competitive extremes, any significant genetic disadvantage takes you out of the running.
I'm barred from the Olympics, due to my too short legs and flat-footedness, for the high jump event.
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Like most things in biologicy, categorization is a nightmare unless you have a very specific use case in mind. In this case I'm talking about women phenotypically and socially (including self-identity) and especially athletes assigned female at birth. These women are clearly not just "males".
As far as I understand the ontology of human phenotype, it is unchanged by use of cross-sex hormone therapy.
what is your expertise in this area? fox news?