Is it? Were males not the primary fighters? Men are more built for combat (higher testosterone, more muscle mass, endurance 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.
> And yes, societies which are better at warfare tend to also have better agriculture, tools, etc, to support their military machine.
He states that there tends to be a correlation, but not causation.