And he is only pointing to some of the lies we've been told.
I don't think it is a matter of stupidity as much as it is to the ubiquitous nature of the lies. This has been accomplished by the overwhelming control that our masters have in the Deep State, which is essentially a board of directors of the US/Anglo/Zionist Empire, over every mass media as well as all ideological institutions like education and the film industry. For as Goebbels, another fascist master of propaganda, once said:
If you tell a lie big enough and keep repeating it, people will eventually come to believe it. The lie can be maintained only for such time as the State can shield the people from the political, economic and/or military consequences of the lie. It thus becomes vitally important for the State to use all of its powers to repress dissent, for the truth is the mortal enemy of the lie, and thus by extension, the truth is the greatest enemy of the State.