Excellent post!
Most of these fans of his never even READ his book--they just like the cover photo, and that The Correct People liked him (Oprah, usually).
A young person I work with who is a fan of Obama just finished reading both of his books, and said 'It's mostly made up, I bet"...and he STILL likes Obama!
When people think with their emotions, there simply is no way to turn them with an intellectual argument.