People are voting emotionally.

Lack of good storyline.

It's not great by any means, but it's a pretty good movie that didn't leave me filled with regret for investing time in it.

If you're interested in the topic at hand, you should just watch it and judge yourself because the reviews have gone very biased by people that didn't even watch it and just hate (or love) the creator. I liked it, it was well written, narrated, and directed and it was about a topic that interests me.