They have to be - otherwise, they wouldn't say the shit they say or do the shit they do.

Case in point - I co-moderated a session at a professional meeting several years ago. The last speaker was a hard-core contrarian on a particular issue. His abstract had originally been rejected, but the program committee relented after complaints of "censorship" (as opposed to editorial judgment) were thrown at them. The resulting talk was unintentionally funny throughout. More than once, the speaker was flatly contradicted by the pictures in his own presentation.