Haha, that's laughable, as if motivating = teaching or thinking that all mistakes are simply a lack of motivation.
Do I think sometimes that Boeheim is too hard on his younger plays, sure. Do I simultaneously realize that Boeheim has an outstanding track record of developing young players and maintaining positive relationships with his players long after they are gone. Hell yes.
And in this specific instant, I have no problem with Boeheim being upset. It was a contested 10 foot floater relatively early in the shot clock. It's one of the worst shots in the game on a points per possession basis (check the chart below)--some players have earned the right to take that shot--either because of trust/experience or skill in that specific shot. Clearly Howard has not earned that right. If it was late in the shot clock, or a different shot (a layup etc.) it would be a different story