Avatar's Na'vi are NOT pantheist, but neither are the monotheist necessarily. They are something in-between: panentheist.
Written by a 25 year-old white woman. Don't know if that helps or hurts.
Avatar review which supposes the underlying fantasy as "white man's brain in a black man's body" — although that's rather oversimplified.
An Avatar review focused on the self-importance of the main character, and the implications of that trait.