Sometimes you can get caught up in myth if you allow yourself to...
SPOILERS!
I see so many people having a problem with the fact that the film is unrealistic. Maybe it is. It fascinated me though to see such a noble icon as the American cowboy co-opted by a man who we will later learn possesses none of these heroic qualities. That the denouement quite conveniently plays out on a film set again is probably stretching it a bit, but it reminded me of Southern Comfort, where outsider[s] wander into a self-contained community and try to blend in, without sticking out as people who don't belong there...
There may be a message about how easily people can slip into routine and cliche when they're trying to make something of themselves, so perhaps it's appropriate that it turns out more like a legend or an exaggerated retelling than a sensible chain of events? Edward Norton makes a fine antihero anyway, so even if you do find the story a touch improbable, it's still worth watching it unfold, just for him.
Love United. Hate Glazers.