Actually came here to "attack" that point. It's a view of reality that requires a conceptual bias-free media as reference for any commentary, and bias-free media is a tautology.
Compelling a perspective is the only thing cinematography / photography is doing. Bias equals point of view. There can't be any unbiased point of view because they're the same thing.
There's a conversation on education to be had here.
If A24 / Nathan Fielder promoted this "documentary" like Ali-G / Sasha Baron Kohen's works, they would be honest about it.
Kohen lampoons subjects in candid videos but at least presents his works as a joke, and we're all in on it.
This movie is the exact same thing, but it's promoted as an inside & sincere look at Holmes, when it's really just the Ali G schtick.
You're right but the distributors and creators pretend that documentaries are objective fact-finding media. and so does the audience.
Look at Super Size Me . The trailers, news media, promotions, critics, broader news media presented it as an objective case study. And McDonalds canceled a popular sales promotion over it. *and it had an enormous negative influence on McDonald's reputation, that it still hasn't yet recovered from.
90+% of people watch and share documentaries with the perspective that they are objective, truth seeking works.