I keep seeing this robot-like criticism of Diamond as "over-simplistic" or "hyperreductionist". But it's just a model? The map is not the territory, and Diamond

I keep seeing this robot-like criticism of Diamond as "over-simplistic" or "hyperreductionist". But it's just a model? The map is not the territory, and Diamond has never claimed to explain all human development. His thesis is merely that geography and environment contribute to biological and cultural dominance to a disproportionate degree compared to other factors. I don't see how this is controversial.