Rather, the result would have the males less likely to die in war, which may include those most adept, those completely unable to partake, and those smart enough to find a way to skip it.
Many would be killed, some would be spared as useful, skilled labour like smiths, some would be spared. All would drop substantially in social status and likelihood of leaving descendants, bar skilled labour, if that.
You had a caste system in these civilizations. Warrior/hunters, farmers, priests, etc.
Neolithic civilization wasn’t just a band of 50 and a few yurts. There were complex societies, but they had scale limits due to technology and knowledge constraints.
ggggtez is not disagreeing with that. He is saying that when one society beats others at warfare, it is not because its males had more testosterone and larger muscles, rather because it had better agriculture and so on.
It's an argument of semantics at this point. I'm saying war isn't won by bigger muscles alone. If you can't feed your troops, or equip them with more efficient weapons and armor, and train them with better tactics, then you'll lose at "war" to a society which can.
I read a book on survival techniques when I was a teenager and it had a chapter on street fighting. It was prefaced with something like: the best way to win a fight is to not have one; pay attention to your surroundings and avoid getting into a situation where you have to fight. Run away if you can.