I think that Avatar is just James Cameron writing his wish fulfillment fic now. The OG movie was Pocahontas with great CGI, but the sequel was a dozen incoherent things that did not mesh at all, and were clearly the product of a director that nobody could say "no" to.

If you want to interpret this movie politically, I'd say it's a case of everyone being right wing when it comes to the things they really care about. No foreigners are allowed to contaminate his blue elf OCs except for his self-insert.