Identify Any Fallacies in the Following Passage Either by Naming

Short Answer

Identify any fallacies in the following passage either by naming them or, where they seem not to conform to any of the patterns described in the text, by giving a brief explanation of why the fallacious reasoning is irrelevant to the point at issue.
I just learned why all those theories about nonhumans building the Great Pyramids and the Easter Island statues and so on are full of baloney. The guy who wrote about them was once a hotel manager somewhere in Switzerland, and he was once convicted of embezzlement. No wonder those theories smelled fishy!