The article doesn't even take into account that the president of the United States surrounds himself with advisors who are by and large very bright people. Our most successful presidents were successful because they surrounded themselves with good people. This is the essence of leadership. Thank goodness we live in a country where leaders are selected for their leadership ability and not for their "smarts." Also we must be thankful that our system of government has many checks and balances. Thus, our fate does not depend upon a single man. Geniuses are always flawed and giving absolute power to a genius is always disastrous, as history has shown.
To sum it all up, the author of this piece cannot possibly be more wrong. First of all, we have not elected a single "dummy" to the office of president as the statistics quoted in this article bear out. Secondly, the United States of America, despite being only 227 years old, has established itself as the most powerful and richest nation the world has ever seen and our "stupid" presidents have had much to do with that. Those European weenies must really hate us for that.