I don't think he's that far off the charts but I'm certainly no fan of his.
Discussion
Oh no it tracks
* Constantly injects his apocryphal presence in real, intriguing events with famous people
* Implies other actual or potentially legitimate people aren't as knowledgeable as him
* Everyone is dumber and knows less than him. Never learns anything from anyone else; all important information flows from his mind and work
* Gets rude and insulting when asked legitimate questions that imply a contradiction to his story
Oh and really important information is always revealed progressively, making the story increasingly more intriguing, yet convoluted and confusing. Crazy, suspicious reasons are profrerred to explain why he's just NOW dropping the bomb.
OH YEAH constantly invokes his adjacency to significant people who could legitimize his story but are conveniently dead.