Right on.

I can't believe they are casting white kids in the major roles in this movie... and better(worse) yet, holding extras casting calls in Philadelphia of all places for people to populate a decidedly East Asian fantasy world. It's obviously not going to be an even primarily Asian-populated background world as the show so obviously is.

This is along the same lines of turning the 2003 RPG video game of the year Jade Empire into a movie and casting it with a white cast outside Sir Roderick(the only white dude in there, intended to be an obnoxious Anglo character that poopoos Chinese philosophy and martial arts with silly European superstitions of the time and his rifle, ultimately always killing his intellectual and martial "inferiors"). Jade Empire draws very specifically off Chinese cosmology and pantheons.

It's stupid to turn the world of Avatar into a world of primarily Europeans on the big-screen for the same reason it would've been stupid to populated it with animated Europeans... it just doesn't fit. Same reason why Jade Empire's world isn't populated by Europeans.