I think this works for guys like Darkari who will never really get more athletic or anything. They are who they are. As a fan, we'd be a better team if he stayed but I can understand.
On the other side, the argument doesn't hold water for guys like Orton who are physically 3 times more gifted than a guy like Dakari who have 0 patience and rush into it and piss their youth and athleticism away trying to "get paid while getting better" when in reality he's just getting into brawls in China. One more year would have done him a world of favors. Guys like Goodwin, who aren't doing bad for themselves, could have been lottery type guys instead of barely first round.
Orton absolutely made the right move for him. If he stayed longer, his injury concerns and lack of development would have led to him dropping in the draft or not getting drafted. He got picked in the first round and made over $3M.