Despite effort to taint the concept of “segregation” with racial-discrimination, we still know its a good thing in sports.
We segregate for convenience, and to award winners. We segregate by affiliation, geography, age, etc.
We segregate to determine the fastest runner in a company, in a club, in a school, in a district, in a league, in a state, in a country, under-13, over-55, etc.
In any decent-sized grouping of the above, theres would not be a female winner. In a global competition, eg Olympics, there will never be a single event with a female winner. Not in running, swimming, jumping, lifting, throwing, skating, skiing, surfing, anything.
Gender segregation gives access for (born) biological women to win.
And yet theres been transwomen winners at high level competition in different sports.
I think it’s reasonable to view that as unfair to the biological women. And it’s a tenable position from logic, not from bigotry or cultural zealotry.