When a major portion of the US population can believe that space lasers are guiding hurricanes along the contrails, there has obviously been a major r

When a major portion of the US population can believe that space lasers are guiding hurricanes along the contrails, there has obviously been a major reduction in intelligence, regardless of IQ test results. The trend you're talking about is a real problem, for sure. This society has some serious problems. I'd absolutely not describe that as a sudden plunge in the sort of acute intelligence that is measured by IQ tests. Think about the great misinformation campaigns and widespread delusions in history. To jump to the most obvious example: do you really think the German people became literally dumber during the rule of you-know-who in 1933-1945, when a significant portion of the population fervently supported his lies? And then suddenly became smarter again? What you're describing is a social problem, not a biological one.