In order for it to be a fallacy, he has to be basing his argument off the fact that people believe this fact. I do not see him basing any argument on his first sentence. In fact, he mainly seems to be using it as an introduction mechanism. &quot;Many people believe A. Proposition B about A.&quot; He states it as fact, and you may disagree with that fact, but that fact is in isolation from his actual argument.