By the way, I, too, am an admirer of the work of Weston Price, however, he even points out that different cultures ate different things. I would guess that historic cultures that ate insects and small game animals did not consume much large game animals. Also, people from more coastal areas would likely not do too well on 'land' meats or large quantities of meat in general.
It also takes time to build up the acid and enzymes that a body will need to digest the meat, and the alkalizing minerals from the bones and blood that would have been consumed in the past would also be needed to complete the entire digestive process. Traditional cultures didn't just rely on flesh as we do, bones and blood was used as swell.