“Modern men’s genes suggest that something peculiar happened 5,000 to 7,000 years ago”
That’s when they first invented marriage.
...and heart attacks. Why did all the men die off? Because they wanted to.
That is also right after people started farming. Being a hunter-gatherer likely means that you don’t have to stay in one place, you can move on when you encounter a-holes. Being a farmer means that you have to sit long winters in a house with your extended family for company and you have to navigate setting up rules for where people get to poop, which is a fraught and contentious issue to this day in many families.