So have you. In that sentence.
You may not have fully recognised my position.
I only support trans rights to the extent of having them accepted as people, with the same rights as other people.
I entirely oppose the idea of any sex based discrimination where a trans person is treated as other than their biological sex.
I find the entire idea of sex based discrimination being justified while trans people are permitted to violate that discrimination to be incredibly hypocritical.
Instead, I would advocate for removing that sex based discrimination.
In competitive sporting events, there is a right to a fair competition, drugs are banned because of the unfair advantage they give.
This comes down to what constitutes "fair"?
For some, fair means each person has an equal chance of winning.
This would mean you need a handicap for every single person, based upon their own strength, stamina, etc.
For others, it would mean no performance enhancing drugs, etc, but for everything else, everyone should be able to compete together, and the best person wins (and that would not separate on the basis of sex).
Then there are other intermediate positions, where for example boxing has weight categories.
But sex is only one factor, there are many factors, including some genetic. Should someone with a particular set of genes be disadvantaged just because of their genes? Is that fair? And where should we draw the line?
As I demonstrated above, black athletes appear to have a genetic advantage over non-black athletes; where the vast majority of gold-medallists, and even medallists in general, are black (the specific example was that at the Tokyo Olympics, in the males athletic track events, 22 out of 28 medallists were black, and 7/10 events were won by black athletes).
Does that mean we should have separate categories based upon race, to recognise those genetic differences and give everyone a "fair" chance?
So I would argue that for sporting competitions, a "fair" competition is one in which your genes and your training dictate your performance, rather than drugs or harming your competition. And with that, I don't see why females should have their own category. That is just the result of their genes.