He's 20, if that. He's a college student and an amateur athlete. Whether or not he's a "kid" is open for (a rather tedious) discussion, but that just comes down to semantics.
I often object to how other posters critique college players -- not THAT they critique them, but HOW they critique them. They're not professionals making hundreds of thousands (if not millions) of dollars a year; they're teenagers (or very young adults) competing as amateurs. Yes, college sports are big business, but there remain key distinctions that separate them from professional sports. Some fans seem to view them as equivalent, given the tone and language of their criticisms of the players.
In the end, here's how I feel about it: Every young man or woman who competes on behalf of our university deserves our respect, unless and until he or she has behaved in such a way as to embarrass the university and the basketball program. If they work hard at their chosen sport, take care of business in the classroom, and comport themselves properly on and off the court, they deserve our respect and appreciation.
Which is not to say their on-court performance can't come in for criticism, but rather that those critiques should be respectful--that those who would offer public assessments of our athletes should remember that they're talking about young amateurs, and not about pampered multimillionaires.