I don't think he's wrong. I'm sure most aren't naturally stupid people, they just dropped out of school early, some high level footballers probably didn't even attend school. And for those that did attend school, how much attention did they put into their school-work when they were in school? When you have a profession that is more about physical capabilities than mental capabilities, what do you expect? I can't imagine the schooling in some countries that produce a lot of good footballers is all that good either. You pretty much can't get regular schooling past like 18 and end up one of the best in the world at your position. Its like two full time jobs, not enough time to do both.