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.
