Newsflash: he's not that stupid - nobody really is. He's red-pilling his followers. Several million watched the video and now they all know that the walls work. All of them.
Requirement #1 is a some sort of 4-year undergraduate degree.
Impersonating a USAF general?
Millions of views, how many comments? People that are figuring out what is going on aren't commenting (well, the ones calling him an idiot, those comments are in there, too).
My opinion is that he's working for Trump, or Trump allies.