I disagree that "those of us who wish to work in an intellectually challenging environment are ... a minority".
I think what is true is that most people don't have the opportunity to be truly human at work (challenged, interested, etc) because the current system doesn't hire human beings, but just "function-fulfillers". Then we get disappointed when the human beings we hired don't act like simple robots... go figure ...
(I don't know how true to life the books are, but the Toyota Way series makes a big point about how important it is to allow -- demand, in fact -- people to grow and challenge themselves, from the engineers to the production workers. It is the US unions insistence on highly constrained work rules and job functions that made Deming hate them, rather than anything to do with wages.)
Also -- nobody wants to work with an arrogant asshole who "thinks they are a superstar", whether they are "a clever" or "a stupid". But it is only folks with low self esteem or power trips who willingly surround themselves with people of less talent themselves.
Knowledge worker? Innovator? -- that could be anyone, including a fry cook at McDonalds, if it was allowed to them. I have worked some shit, shit jobs, and I was always struck by how the spread in raw intelligence was about the same as in my elite private high school (now study skills and entitlement, however, is something the "non-clevers" just don't have at the moment, but that is a cultural thing that could be changed, if we cared.)