Does an intellectual make the best president? If he expressed his deeper intellectual thoughts, would the general public understand him. I think he is a good communicator, which is probably more important that intellectual ability for many.
His most honest statement regarding management is that there are so many moving parts to running a country, that for much of the time you fix retrospectively. While not a solution to disasters, it helps ensure the same problem doesn’t reoccur. That is a kind of plain speaking, that underscores a deeper understanding undaunted by expressing a universal truth.