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.

The best films of this genre always show a path and provide a takeaway for being a better person.

Blistering performances.

The film never slows down or bores, plunging from one harrowing sequence to the next.