I believe the hypothesis behind this is that women entering the workforce in large numbers disrupted the labor demand/supply equilibrium while also portending major changes to family structure and aggregate social dynamics.

I don't think its a very interesting hypothesis though. The increase was fairly gradual post-WWII [1]. It also seems like it probably points the causal arrow in the wrong direction. Women probably would not have entered the workforce in such broad numbers had economic conditions supported a single income earner per household.

[1] https://fred.stlouisfed.org/series/LNS11300002

He's not being mean; he's just failing to present an argument.

Probably just missing '/s'.

Well I can’t delete it anymore. I was honestly being serious, maybe a little terse.