Can we call this guy the most ignorant guy on earth?
Mmmm, no, not by a long shot. There are people with Youtube videos about bitcoin WAY more ignorant than him. Like for example that bald dude that someone has an avatar on here of, with an alien thingy stuck to his head. You'll find even more ignorance in the comments section of /. articles on bitcoin, too. Some of those posts are just painful to read.