He makes the statement "none of my views are based on what it is convenient to believe".
Any level of reflection should cause one to pause before making such a sweeping statement.
How does he know his atheism isn't based on convenience? He certainly doesn't want to believe it's based on convenience. But wishing doesn't make it so. And again, some reflection should cause anyone to pause before making such definitive statements about anything as complex as the brain, motivations and human psychology.
He rules out the possibility that God could tell him anything about himself that he doesn't already know. Which is remarkable hubris.
Well, perhaps he could have prefaced it with, "to the best of my ability I try to make sure that..." Other than that, his argument seems fairly sound and reasonable to me. He never said God couldn't tell him anything, in fact, the man in the video said that he couldn't tell God anything about himself that God didn't already know. (If God really is omniscient.)