Meh, this is not real argument. We have no idea what opposing coaches are actually saying. They ALWAYS say nice things about the other players. Chances are they'll talk about Buddy like he's a POY candidate for most of the year. He's not.
Smart is a very good player and you could argue that he is the most well-rounded player in the Big 12. Not many can stuff a state sheet the way he does. But he stuffs EVERY stat -- turnovers, shot attempts, silly fouls in addition to all the good stuff too.
He COULD be the player of the year, but he's still immature on the court. He's got to learn which shots to take, which passes to make, and when to step back and just defend rather than going for the steal.
He does have some growing to do as a player. The coaches think highly enough of him to vote him POY last year. Scouts think highly enough to want to draft him in the top 5 last year. His coaches during international play have raved over his play. He may not win Big 12 POY this year, but I wouldn't bet against him.