The importance of genes for determining intelligence in humans is also available in Nature, etc. But a large proportion of the population still delusionally believe everyone is the same. Mostly due to filter bubbles.
I don't know anyone, prominent or not, that thinks everyone is the SAME. It's trivial for anyone to see identical twins aren't even the same, so unless there is evidence that a "large proportion" of people think this, I assume it's a made up scenario.
I'm also familiar with quite a few cultures around the world, and they all seem to have concepts of being born "gifted" or some version of being naturally talented.
