You seem to be expressing a very narrowly defined view of what makes someone "smart". To take the other perspective, Zuck grew a hobby college-dorm project into

You seem to be expressing a very narrowly defined view of what makes someone "smart". To take the other perspective, Zuck grew a hobby college-dorm project into one of the richest companies in the world, by taking advantage of human psychology. Elon harnessed a cult-of-personality to (until very recently) convince everyone that he was basically Tony Stark. Maybe they are not engineering-genius smart, but that _are_ smart. I don't think they seem like very moral people, and I don't think we should model ourselves after them. But they are smart. You can write just as dismissive reviews of Steve Jobs as well. He was a megalomaniac who took existing ideas (MP3 Players, smart phones) and dressed them up to be fashion. People are not all one thing or the other.