The agenda to that movie being that Hollywood's brand of masculine heroism in Westerns was inaccurate and, moreover, counter-productive to the goals of the characters.
What "agendas" are being pushed anyway? Is it the strong female hero? The strong black hero? An environmental "message" shoehorned into the plot for an extra few bucks?
I was talking about all the environmental scams they jump on, out of oil in 10 years, out of top soil in ten years, global cold snap in ten years, global warming in ten years but don't worry I will not tell anyone what you have been watching.