Yes, I think I could have placed more emphasis on the fact that his primary hypothesis is that the conditions sufficient for technological advancement were present in Europe and the Middle East. But absolutely not that there were innate deficiencies in the people who did not benefit from those conditions. He's showing that most of history has been the result of a geographical lottery.

Jared Diamond is a very sensitive and empathetic man, and that really comes through if you watch the TV series by the same name. His work is not at all promoting Euro-centric supremacy as a race or culture, merely explaining a set of historical circumstances.