Ask yourself this, why do they split the sexes in sports? Many assume the answer is that we always split the genders, but people seem to forget why.
Here is a quick way to understand the situation. Look at any sprinting world record. It does not matter what one you choose. Then, look at the Men's world record vs Women's and see if you find a trend. The gap wont be small either.
The reason we split the genders is because in the vast majority of sports, women cannot compete against men and it be close. If you look at the 100m race that just happened. The guy who got last place had a time of 10.06s. The female world record for the same race is 10.49 and the Olympic female record is 10.62. If women and men were to compete, the best of the best of women would not be able to keep up with last place by almost a half a second. This is the reason we split the genders.
Now, we know that biologically sometimes we get people that do not fit perfectly into a category. That said, at what point do you start to say that genetically someone has enough male advantages that gives them an unfair advantage. Women's sports are already way less popular and if you follow your argument, you are going to make it even less watched.