He's really too small to play the PF position in today's NBA where the players only keeps on getting bigger. He's an inch smaller than MKG. I just dont believe it until I see it. The boy can def ball, but I think his height is going to hurt him. I'll wait and see though.
While I don't know anything about Bennett I do have a slight problem with your statement the NBA keeps getting bigger. You really aren't watching the same NBA I am apparently. Most teams are getting smaller and quicker in todays game. Yeah the playoffs have quite a few traditional teams(most of which have older bigmen, seriously name one traditional big under 25 in the NBA, I cannot think of one) this year but if Westbrook was healthy you'd have another heat thunder final and both those teams play smaller lineups where there real big are just roleplayers at best.
The key in the NBA is talent first matchups second so if Bennett is the most talented guy you take him and worry about matchups later. Take the knicks pacers series where Melo played the four. You ended up with David West on a guard on defense and while the knicks couldn't take advantage of that(they lack talent) most teams would have killed them(imagine west trying to guard klay thompson or ray allen etc). Not saying we should definitely take Bennett but if the kid can legitimately ball(no idea if he can or not never seen him play) you draft him and worry about positions and matchups later.
Long post short I disagree with your assertion good sir.