If the list had included "The Black Swan" maybe Taleb would have been more charitable. Regardless - not sure if Lex needs any kind of "credentials" to be a good interviewer. His work stands on it's own.
Maybe it's just me, but listening to lex, he approaches all guests with a kind of open "I don't know much, I want to hear what your have to say" type attitude, which makes this even worse. Taleb sounds like a dick.