Pho,
How is the criticism on Sullinger's weight uninformed?
Maybe uninformed isn't precisely the right word.
My feeling on it is that Sullinger's weight is no surprise. He is exactly who we were told he was coming out of college. I think if you're informed about the kinds of players in the league and you've watched the game for some time, you can identify different body types fairly well and have an understanding of what kinds of physical developments you can reasonably expect from a player.
When I see people saying that he's exactly like Zach Randolph, for instance, and that he needs to model his game accordingly, I think that shows that somebody is uninformed. They are both 6'9'' 260, but there's a lot more to a person's body type than their BMI.
Sullinger can improve his body, but I think for the most part he is what he is, and that's OK. He's not Sean May or Eddy Curry. I'm not worried about him eating his way out of the league. In fact, his size is a major part of how he can be so productive despite having below average height and athleticism.
He's never going to be Paul Millsap or David West, either. But that's OK, too, just as long as he can continue developing his jumpshot. He needs to be able to act as a credible outside threat in order to stay relevant in this league.