Give them enough rope and they'll hang themselves or so it should be. Without making accusations Werner Herzog exposes this man for who he is just by presenting him in his day to day life. Particularly revealing is when Dr. Scott says he is short $600 and goes ballistic trying to get viewers to donate.
Neutral is not an adjective that makes any sense in Herzog's cinema. When he makes a new film, he is commited, engaged, fully into what he wants to look at, find out. He is not a journalist. Honesty, intellectual, emotional that is one of the main virtues one finds in his work. And a focus on the human essence, an openness clear of preconceived notions. That's what makes this an interesting portrait. Worth watching.