I thought of the same series, but that's not the tl;dr I would have chosen at all. I would have gone to part 4e where I found this quote near the end:

> We should also note that these women work an enormous amount. We estimated, you will recall, working hours for our male peasants on the order of 2,500 to 3,500 working hours per year, massively more than modern full-time employment (40 hours per week is ~2000, typically around 1,750 hours after sick time, vacation, holidays and such). By contrast our peasant women are working in this model 3,760 hours per year, significantly more than their fathers, husbands and brothers and wildly more than modern workers.

It's nice to think that our ancestors didn't have to work as hard, because it justifies our own desire for more leisure time. IMO that desire is justified anyways; but premodern subsistence farming/any sort of self-supported lifestyle is incredibly labor-intensive compared to modern agriculture, regardless of whether you're a serf or a freeholder.