Tasks based on sex were not so prevalent until high cultures formed...
Like being pregnant and giving birth (as many times as possible), breastfeeding, and raising those same infants while the men are doing tasks that are unfeasible for pregnant breastfeeding women taking care of infants?, like hunting, building shelters and going to war, among other things? (Which some women did, but the majority did not)
Oh, ya ya, for sure. A lot of people in this thread seem to be sharing the same anti-anthropology delusion. Which is very concerning but not surprising in the age of misinformation. More culture-war BS.
It's echo-chamber, culture-war nonsense. There's a reason men are the vast majority of physical jobs, and it's not because anyone is stopping qualified women from working.
Just as an example, in my personal experience, we rarely received women's applications to work warehouse or roofing, and even less who met the qualifications of being able to pick up minimum 50lbs (not that heavy, approximately 2x 24's of beer) on their own.
I'd also like to point out that, while I'm not trying to minimize her impressive achievements, your friend is from modern society, not ancient. She had the privilege of going to school, being a cheerleader and having free time, instead of cranking out babies in the ancient wilderness.