In the face of overwhelming counter evidence He was steadfast in his lunacy, I guess that shows he was convinced
I debated with myself for a long time whether he was a true believer or whether he was a cunning salesman seeking to promote his own web site.
But I'm not sure even the best salesman can hawk those wares for very long without flashing a "wink" to the audience every now and then (something Bewildered never did).