The problem is not factuality. The problem is assuming that the entire World should now and forever be judged through the moral lens of post-war America.
Dubai seems like the peak of inequality and ostentatious luxury even to those of us who don't live in America (I assume you mean "the US", not the Americas).
There are genuinely bad places in the world even factoring out "American exceptionalism/egocentrism". Dubai seems to be one of them.