kojus
This is false, medieval workers used to work less than we do[0]. We work less than 1800s laborers, but their life conditions was such an aberration that it gave rise to the socialist movement, mass strikes and bloody revolution attempts, which in turn forced governments and capitalists to reduce the average labor time.
[0]: https://groups.csail.mit.edu/mac/users/rauch/worktime/hours_...
Working 40 hours a week is not a natural law, peasants in the Middle Age worked less hours annually than us today. Reducing work hours would also have a positive environmental effect.
Otherwise, I wholly agree with your diagnosis of the situation.
By contrast, most of evolutionary psychology is hardly testable since it tries to extrapolate what constitutes human essence at this point primarily from observable human behaviors, which is might be more a function of our current environment rather than genetics. It can also be used politically to justify anything, from neo-Nazism to anarcho-communism.
It seems like reducing work hours is the most effective way to combat climate change.