https://polymatharchives.blogspot.ca/2015/01/the-inappropria...
Still, Roughly one third to one half of the billionaires (45.0%), Fortune 500 CEOs (38.6%), Senators (41.0%), and federal judges (40.9%) attended a school requiring standardized test scores that likely places them in the top 1% of ability. https://www.psychologytoday.com/files/attachments/56143/wai-... Further, why that's only a proxy for intelligence, those with different backgrounds may also have unusually high IQ's.
Granted we are now using a proxy for g to estimate IQ. But, as I was saying intelligence not scores on IQ test IMO it's a valid approach.
My point is if you look at Intelligence and assume they should be more successful with more IQ you need validate the IQ test to verify it's still valid at the outer edges. But, if you look at the most successful people and find IQ > 140 to be vastly more common than the general population then intelegence unlikely to be actually harmful.