I'm more worried about the opposite- categorizing these type of manic visionaries as "charlatans" ignores the value of being able to advocate and try new ideas,

I'm more worried about the opposite- categorizing these type of manic visionaries as "charlatans" ignores the value of being able to advocate and try new ideas, and think radically outside of the box. I think this dissertation operates from the attitude that "nothing is possible, nothing is worth trying" and then extrapolates that taking risks and being innovative is charlatanism. It is what Nietzsche calls the philosophy of the "last man" - someone that takes no risks, is tired of life, and has goals of only comfort and security.