The family used to be made up of parents, grandparents, aunts and uncles, cousins all living together. That only changed in the 1950s.
https://online.csp.edu/resources/article/the-evolution-of-american-family-structure/
In reaction to the tumult both at home and abroad during the 1940s, the 1950s marked a swift shift to a new type of domesticity. Insider reports that “the idea of the nuclear, All-American Family was created in the 1950s, and put an emphasis on the family unit and marriage.”
700 BC isn't when our Paleolithic ancestors were around.
Jordon Peterson is a first class moron who only presents data that supports his hypothesis and leaves off the parts that undercut it -mostly because he speaks on things he has no real understanding of or training on. The Nordic countries are far from gender equal and still adhere deeply to traditional gender norms in many ways. Women are still expected to have primary care of children and the home and they tend to go into public sector jobs which better allow them to balance those responsibilities with work.
"But amid immersion in a culture that seemed to actively champion women’s rights, she couldn’t escape the fact that there were still “primarily white males sitting at the top” of many of the best-known companies. Denmark’s global image, versus the reality, “didn’t always match up”.
It is a paradox that many women working in the Nordics will recognise."
And none of that speaks to how women are still routinely hazed and harassed out of STEM, as well as medicine and other traditionally male-dominated fields.
"Nearly 50% of women in science, 58% in academia, and 43% of graduates in STEM report experiencing sexual harassment."
https://www.boldvoices.co.uk/blog/sexual-harassment-in-stem#:~:text=Nearly%2050%25%20of%20women%20in,graduates%20report%20experiencing%20sexual%20harassment.
There have always been women warriors, women big game hunters, women political and economic leaders - from our most ancient history forward. Of course, women bear children and that does have some influence on the types of things that women tend to do, but there are also traditional cultures where men spend a lot of time playing with and nurturing children. The Mosuo of China are a matrilineal culture where nobody marries and couples never live together. Everyone lives at their mom's house and men help to raise the children of their sisters. Women do all the farming and heavy work except for building houses, which men do, so men spend a lot of time caring for children.
https://medium.com/inside-of-elle-beau/why-do-so-many-men-lose-touch-with-their-kids-425b94029104
The Aka, foragers who live in Central Africa, are some of the most hands-on dads in the world. “Fathers are within arm’s reach of their one-to four-month-old babies more than 50 percent of any 24-hour period and are nuzzling, kissing, hugging, or mostly just holding them a whopping 22 percent of the time they spend in camp. Even when Aka parents go on hunting expeditions in the woods, they take quite young infants and their other children along, being careful to remain in constant contact.”
“Almost invariably, fathers in hunter-gatherer societies spend more time with infants than fathers in most Western societies do, and much more time than fathers in farming societies. Indeed, in many farming societies fathers never hold their infants at all.” Hrdy, Sarah Blaffer. Mothers and Others (p. 128).
It's lazy to cling to 1950s notions of "women are like this and men are like that" when there are millions of exceptions to those broad generalizations.