Re: Lazy thinking
Exactly how many globally-significant professional boxers have globally-significant Oxford and Cambridge produced?
Are you missing the point deliberately, or have you been hit in the head too much?
The point is that not all boxers are thick. Thick people don't gain entry to elite universities and gain sought after places on their competetive teams.
As you demonstrate admirably, it is more than possible to be stupid and not box. You're seeing causation where only weak correlation exists.