I have confidence in the US electoral system to select representatives of more than usual charisma, but not competence or integrity.
We should put more pressure on elected politicians around competence and integrity, sure, but it doesn’t mean random person is going to be better.
In the original comparison second category of people have much higher intellect than average.
I think that intellect may sometimes be weakly and unreliably associated with some kinds of competence, but not with integrity, which is as important. I think power seekers are self-selecting to be more self-serving.
We need to optimize for less self serving and more integrity but we should strive for smarter people up there too.