Well, its either "remove all gender from classification", or "we're doing crotch and blood checks to verify if youre a woman".
And since you have to "prove youre a woman", thats like having to prove a disability. Is that the message we want to send to all women? I dont want to send that.
Evidently, the IOC is choosing the onerous route of crotch and blood checks.
And about the "Women would win almost no sports competition.". Well, the thought of "get good" comes to mind. Supposedly, more competition is better for everyone.