My parents can barely manage their lives, and I'm the only child (of 4) who was able to finish college. So, I always find the fascination with IQ to be odd.
At 3rd grade, my siblings and I were separated from the rest of the kids and given the gifted label. (Someone once explained that 'gifted' was a cold war program to beat the soviets - idk). We were then given special treatment: small classes, lots of logic puzzles, access to technology and science, lots of field trips etc.
By the end of high school, approximately 25% of my class had already dropped out. But, for some odd reason (probably because obedience - i.e. 'conscientiousness') I succeeded.
Over all of those years, I came to realize that there were kids with high IQ who were smart but even more who were very stupid. Even of the smart ones, many of them seemed to completely lack creativity, intuition, or lateral thinking. And, many were also stricken with major behavioral and learning disabilities.
I realize that there are correlations with IQ to 'success'. But, the IQ club, for me, was really a circle jerk. And, I don't believe that they're somehow more re 'fit'. So, this analysis seems spot on.
Edit: oops, if I had actually read the link, instead of just the headline, I would have seen that it's not 'spot on'. Sorry :-)