Human beings have brains that were forged during hardships and ice-ages to make us inclined to form groups for survival. Those same drives make us desperate for a social identity, to the degree that we literally can die without social identity. (A fascinating field of study btw.)

This has made the internet the most dangerous tool we’ve ever created, because it has allowed people to deconstruct the very notion of group identity and exploit the drives in our own brains to connect with others. This is why we have so much absurd bullshit now, so many conspiracy theories, flat earthers, incels and redpill grifters, science-deniers and chemtrailophiles. People are finding their own, almost random group identities to connect with, groups that often have no real connection to reality, and just offer validation for people’s feelings.

Validation for feelings is the next most important thing for humans, because it reflects how our brains actually work. Most people are under the impression that the brain is the seat of intelligence, that brains are calculating machines that work out problems and come to logical conclusions. Even if you don’t think this, you have most likely at least become comfortable in trusting what you work out in your head.

But brains are not reasonable or rational, there was no such thing in the ancient world that shaped our brains. That world was just threats and signs of threats. If your ancestor had a brain that could accurately connect the sign of a threat to an actual threat, they would likely be prepared and survive. See a paw-print by the watering hole? Maybe there’s a predator around.

That same tool now functions the same way in a vastly different environment, and it tells us wild stories that aren’t even connected with reality to explain the things we feel. The brain notices you feel fear, it looks around and pieces together things to explain that fear. Feel sad? Brain digs around and starts randomly tying strings together to explain it. No reason, no logic. This is where much of our mental health epidemic is coming from, unchecked brains doing what nature intended them to do, in a world nature never intended.

I don’t think this guy has an anthropology degree

In a vacuum, your post implies we should stop giving birth to boys as often as girls on a pure ethical basis to minimize the amount of miserable lonely people. Like, abort 75% of all male babies or if abortion is too yucky for some of you use some kind of geneforge to make female births 5x as likely.