Bad reviewer, couldn't point out even the obvious lazy character design of Na'vi, pretty much just paint a Native or African in blue and call it a day.
2nd, the storyline is not total original... Pocahontas much?
I am not saying this movie is bad, I personally enjoyed it very much. However, as a movie critic, how can he miss these obvious points... not to mention the moral theme is too force feeding although it's a good cause. Not many audience like being told what to do or what they did wrong.