Very well executed

It is an exhilarating, distressing, funny and profound film, with one of the more memorable film scores in years,

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.

One of the film's great tricks is that, for a time, you think it will go down a rabbit hole of unrealistic glorification.