I second that comment in the article: "In intellectual terms, Professor Brandon's smug thesis raises another question: If he's so bright, how could he be dim enough not only to believe such an absurd notion, but to hail it publicly? "
He probably can't honestly, very honestly comprehend, how can any smart person have views different from his. At the same time he most likely believes that he IS a very tolerant person.
I think he and alike forfeit the right to be called a scientist.