IQ scores in most of the Western world began reversing sometime from the 90s to early 00s. [1] That link is for the US but similar stuff has also been observed in most of every Western/OECD nation. By contrast they're still rapidly increasing in the 'Global South'. You'd expect this to manifest in reduced test scores and reduced quality of outcomes across a breadth of fields over time paired with the inverse happening in countries seeing gains. And that does not seem inaccurate.
Why this is, is an interesting question but it hits on too many taboo topics. Though perhaps rational discussion becoming taboo is itself a part of the reason. When you accept reality, whatever it gives you, you're obviously going to have a far more rational population and better outcomes than one that insists on bending reality to fit a desired narrative, even when it obviously does not. After all this is precisely what brought Greater Arabia from the center of education and learning in the world to rather the opposite. It wasn't religion, but letting ideology dominate reality instead of the other way around.
Why this is, is an interesting question but it hits on too many taboo topics. Though perhaps rational discussion becoming taboo is itself a part of the reason. When you accept reality, whatever it gives you, you're obviously going to have a far more rational population and better outcomes than one that insists on bending reality to fit a desired narrative, even when it obviously does not. After all this is precisely what brought Greater Arabia from the center of education and learning in the world to rather the opposite. It wasn't religion, but letting ideology dominate reality instead of the other way around.
[1] - https://www.popularmechanics.com/science/a43469569/american-...