My problem is that you stated this "biological failsafe" as a fact, insisting that "it is a thing", and yet you have no evidence to support it, and it's only been theorized about in humans.
Ah. I didn't realise you were referring to this. According to google, this is impossible in humans, and it has never produced an actual child. Are you opposing this, or did I interpret you incorrectly?
It's not a "biological failsafe", it's an artificial procedure. What the fuck kind of scenario encourages nature to develop this system in the very specific case of all the males in the species to die out?
