I'm only half tongue-in-cheek here.
If women are good enough at basketball to join the NBA, let them. If they are good enough at baseball to make the major leagues, let them.
Of course, this negates any need for "women's leagues" of any sport. I mean if a man can put on a dress and join them, what purpose does a "women's league" serve? And vice versa.
Just co-mingle the sexes in every sport and whoever is the best makes the team, regardless of gender.
You are missing the irony. Reverse the genders in your argument and you have it.