I remember in college, back when I was trying to figure out life and was full of doubt, women wouldn't give me the time of day. Now I'm a bit older, traveled the world as a musician, got in shape, and am pretty comfortable with myself. Now, women...still won't give me the time of day, haha.
In all seriousness, it must be easy to fall victim to a sociopathic narcissist like this guy, because his confidence is off the charts. There really needs to be some sort of public education on not only critical thinking and media literacy, but also predatory tactics employed by monsters like this.
The problem with critical thinking tools like evaluating claims, examining arguments, understanding dishonest framing and tactics and such, is that they undermine much of politics and religion as a matter of principle (this does not apply to secular philosophies developed before gods and myths were attached, i.e. Buddhist and Daoist philosophies). Since the powerful people and institutions, and those who have become emotionally attached, are heavily invested in the status quo, there's going to be resistance to education that equips the youth to think more critically.
That's why we need to learn the elements of logic and debate for ourselves. We have to keep checking our views by finding good opposing arguments and considering them. Engage in honest discussions. And we have to help the youth learn how to sift through the information they're getting, so they can better decide what has practical value - what comports closest to reality - and what can be more or less discarded. Maybe then, future generations will look at the dominance of corrupt entities as a thing of the past. Think about how much bad is done in the world, and could be avoided if people had the intellectual tools to see through the BS.
Anyway, I hope the documentary opens people's eyes to what some of these cults of personalities are all about, and I hope people realize this goes well beyond this one person.