He is very smart in book knowledge and business. And he was a pretty good mayor of New York. He is just not good at reading the rest of the country especially the red and purple states.
Kind of like Giuliani, running NYC is a lot different than running the US.
I think he is an Uber elitist. It’s just that he lives in a New York bubble, instead of a Washington DC Bubble. I might even go so far as to say that his understanding of politics is actually sub-average.