I don't see how you think these questions ignore cultural evolution. I think the question can be rephrased as asking "What causes of gender-biased job funneling/preference are acceptable in our hyper-PC society?"

1) Gender-biased job preference due to unequal opportunity: Bad

2) Gender-biased job preference due to unequal societal expectations: Bad

3) Gender-biased job preference due to genetically pre-disposed traits that are influenced by environment/culture: Possibly OK as long as culture has gender-equal expectations and opportunities.

4) Gender-biased job preference due solely to genetically determined traits and inherent job qualities. Ok. (I don't think this exists much as most traits that impact job preference have a significant emergent/environmental components).

I think our "hyper-PC" society agrees with me on 1) and 2) and possibly 4).

I think most of the disagreement happens around 3). Is 3) ever OK? How do we tell if society if sufficiently equal for 3) to be Ok?

My personal stance is that it doesn't make sense to argue that 3) is ok until we have done a much better job of eliminating 1) and 2).

edit: layout/typo