Also, a response I made in an Avatar community that I think expounds on this whole "it's just a movie" argument:
You do realize there are real religions based off of animism and shamanism that the fictional Na'vi religion is based on. You could go worship them, stop being so obsessed about a movie
Avatard.... ur doing it wrong. ~ anjel_kitty
The movie is the modern equivalent of oral tradition. The indigenous people would transfer their theology and ancestral through storytelling. Those stories were mythological from modern standpoint, but still maintained identity in their cultures. Avatar is our equivalent of oral tradition.