Came into this hoping to hear rational perspectives on flat-earth theory. What we get instead is an inside view of how cultists think and behave.
They believe they have discovered some grand truth that nobody else can see. Then they prescribe to the idea with such reckless conviction that they either outright reject any evidence that disproves their theory, or they contort it until it fits into their distorted view of reality. They then point at the rest of society and say that the truth will be revealed to us as long as we adopt their view of reality. And anyone who refuses to believe them suddenly becomes the enemy. At one point, they even go so far as to claim "it is a battle between good and evil." This all shares stark similarities with other cults, like Scientology.
This film makes it easy to see why some people fall prey to cults, it's a mechanism by which they can cope with their crushing feelings of insignificance in the world. Suddenly they belong to something "exclusive," something that brings them closer to other human beings (which is a struggle that many people face.) This is especially effective with flat-earthers since, by adopting this view, we all become the center of the universe.
I applaud Netflix for not outright ignoring or censoring pieces centered around pseudoscience. But at the same time I'm disappointed because, as is evident in this film, these folks feed off publicity like vultures and use it as a weapon to trap others into their cultist views. Notice how satisfied their "leader" gets when he realizes the media is actually giving attention to one of their conventions; and the way his eyes light up when he sees that a couple brought their kid to said convention was just downright disturbing.
The only thing I gained by watching this film was a stronger distaste for cults.