I think the question here is being lost:
Is Amare a legend IN THE MAKING?
Not, is Amare already one of the all-time greats?
The question has to be yes. At one point, Shawn Kemp was a legend in the making. He never fulfilled his potential, but he was still one of the beast in the game when he was playing. But he will not ever be considered an all-time great.
Amare unquestionably is on his way to becoming an all-time great. But there are so many things that could go wrong. But I don't understand why anyone would want to intentionally take away benifit of the doubt.
Now if Amare played for the Spurs, we'd be seeing different feedback.