I mean...not really. Kids in far worse positions that him (i.e., guys who aren't famous on campus, guys who don't play football, guys who come from rough family situations, etc.) take casual approaches to their classwork. It's hardly uncommon to find an academically unmotivated college student. He also comes from what appears to come from a pretty comfortable financial background (parents are both pharmacists and own a pharmacy) - they probably don't have ungodly amounts of money, but probably have done quite well for themselves.
It is kind of wild that at some point, especially his last couple of years there, why an academic advisor didn't tap him on the shoulder and say "Hey man, you're X amount of hours away from a degree in X. Just make that your major, take these remaining classes, and you'll graduate with a degree. Otherwise you'll just rack up a bunch of random hours, but not have enough to graduate in anything." Or maybe someone did suggest that and he went "Nah," especially after he won the first national title and became something of a campus legend.