Firstly, let me say that I did watch the movie and that my FB feed has been filled with reviews, critiques, and commentaries by people I would generally call allies in all of this.
I'll let William Catton's 1980 book Overshoot stand in for their position.
What we can see is a lot of people who still have colonized minds operating within a dying civilization.
The people I gathered are honest with themselves and have spent years dealing with their grief to get here.
Note how this is very different from studying permaculture, going off grid, and learning from indigenous communities.
Hope this helps!