That's what they really are. The sex of the candidate is really as immaterial to the proponents as to us opponents of this nasty little device. Shortlists entirely of Georgia Goulds (and supporters of abortion up to and including partial birth, if of nothing else) on the Labour side. Shortlists entirely of K&C "trust fund babes", with few or no political opinions, on the Tory side. That is the point.
Of course Parliament should be more diverse. More diverse in terms of opinion.
But then, Parliament is bicameral. And one House remains politically diverse while ticking most of the PC boxes: more women, more people from ethnic minorities, a broader range of ethnic minorities, more people with disabilities, vastly more people from less exalted backgrounds these days (never mind after the forthcoming General Election). The removal of the hereditaries has made it older and much more metropolitan, and has not been good for political diversity. But even so. No wonder that all three parties want to abolish it.