Earlier quoted context omitted.
Wow that guy's an idiot. He actually claims the Iraq War was a failure because Iraqis have IQs in the 80s and are therefore incapable of accepting democracy. Racism aside, if you've done even a bit of reading on IQ you know it's been rising for decades if not longer. His Jeffersonian Democracy was built by people with an IQ that would be in the 80s today.
Can you point to some of that reading? Pedantically, that goes against the definition of IQ, where 100 is always average so it can't really increase over time, but your general point about people getting smarter doesn't intuitively make sense to me. Obviously we have more knowledge and resources to build on today, but I've never seen any reason to believe modern humans are smarter from birth than humans born 300 year…
IQ by definition averages to 100, but if you compare present populations to past populations without the normalization there's a significant difference.