if the position is related to their qualifications, yes. some scientists are very very dumb outside their field. IQ is not necessarily universal.
But you have people like Noam Chomsky who are brilliant in many fields.
> His work has influenced a wide range of domains, including artificial intelligence, cognitive science, computer science, logic, mathematics, music theory and analysis, political science, programming language theory, and psychology
People like him should have power, but they don't, because they never seek it.