Because it's a "mass psychology" BS explanation based on the premise of "others are misguided/idiots/sheep/Stockholmed and I know the truth/true freedom" - as opposed to a good faith argument, understaning that it's an ideological preference and that others (including people with 10 times the degrees, career experience, computer science knowledge of the author, can think otherwise).
If that very basic thing needs to be spelt out, I'm not sure how any discussion is possible...
