Being wrong does not directly lead to being a &quot;crank&quot;, whatever that means, and the poster did not demonstrate anything beyond that he thought the author was mistaken.   Let&#x27;s be honest - the poster called him a crank because the topic is one the the poster finds distasteful.  There was no clear proof of him being a crank.  Ironically, the poster is guilty of the same thing the author is being accused of, which is poor reasoning about a thesis.