I certainly can't argue with that, and while I can't speak for Zzzz1 either, I'm sure he'd agree as well. I am certainly not an expert on economics in Saudi Arabia, so if Reaganomics hasn't reached there yet, I am not going to be surprised. In fact if you get word that it is headed their way, you could do the Saudis a favor and let them know, so they can head it off.The middle east countries like Saudi Arabia are great examples of countries where you can have a high gdp per capita and a great level of poverty to go with it. But they have nothing to do with freedom or capitalism or reaganomics causing it. The wealth of the countries is in oil and the monarchies own it by divine right or some such thing. Those countries prove that a ruling monarchy causes unequal wealth distribution.
The question was, I think, how good a measure is GDP of prosperity. And on that point it appears to me the score is 1 to zero in favor of Zzzz1. We all know that very low GDP is invariably (or can you find an exception?) associated with backwardness and a lot of poverty. But the converse doesn't seem to hold that well. And it is that observation that ruins our lovely generality and wrecks our 'obvious' conclusion. While High GDP tends to be associated with greater prosperity, that prosperity can be unevenly distributed, and that inconvenient truth messes with our pat conclusion.