Yeah, I don't get that gimmick, either. Maybe it's to soften the jabs the film makes so folks can say, "Yeah, but..." It is weird that way and I think it's a weak device, but it's not the first film to do that.
Very true, I read a comparison to Dances With Wolves in that regard as well, which seems apt.
Personally, I don't care if Hollywood wants to keep making propaganda films, but I'm not interested in paying to watch them. It just seems that propaganda should be paid for by the people who are attempting to sway others to their viewpoint. So liberals should buy everyone tickets for Avatar...and if they throw in popcorn and $50 bucks for my time I'd go.