The guy's just a sophomore, not halfway through the season, who averaged about 6-8 minutes a game as a freshman. He has made leaps and bounds over where he was last year and has improved considerably since the season began. Of course he makes mistakes. He takes shots he shouldn't take, shoots 52% from the free throw line, and fails to box out sometimes. Occasionally he's out of position defensively because he's trying too hard to block shots. But he's become really good and makes far more plays than he doesn't make.
We have to accept that he's a young player and will make mistakes but we're not close the other night without his contribution. He's what...19? Don't expect him to be perfect!
Finally, I know he missed that big free throw and, if you want to be unnecessarily harsh, you could say it cost us the game. But that was a huge free throw, tons of pressure, for a guy who's never been in that situation. That wasn't Buddy or Woodard who are used to having the ball in their hands at the end of the game. And he missed that FT, but he missed it long, not short. He wasn't scared by the situation, the environment, the pressure. If he was, which he would have had every right to be, he'd have banged it off the front rim. He didn't. That impressed the heck out of me. It matters that he's not afraid of situations like that and will be helpful in other games where there's as much, or more, pressure.