I agree with you. He should play the position he is best at. I just don't know what position that is.
He didn't look very interested OR effective defending on the block. He went for the poke steal at least 3 times and the player just spun off him and scored an easy layup. He also didn't rebound particularly well against NBA size in Biyombo and Mullins. If he can't rebound against those guys, then he's going to have issues rebounding against anyone.
Right now, as a PF, he is already one of the best ball handlers in the league .. which has to make you wonder if he belongs there. To be honest, he looks like a better ball handler than a lot of SF's too. He can pass OFF THE DRIBBLE. That's an SF skill. Cousins can pass from the high post or on the block. That's a big man passing skill. Robinson is finding guys out on the break as a ball handler. He also runs the floor like an SF. And he didn't show much of a post game. Of course, he didn't get the ball on the block, but I can only go off of what I saw tonight.
Offensively he played more like a small forward then a power forward. Defensively he looked more effective on the perimeter then in the post. That is what happened. Don't shoot the messenger.