He is living in a fairly far-flung sense of reality. He is nuts.
People need to remember: Movies are Trumpty's history books. They've formed his entire view of the world and what has happened over the millennia. He's watched a lot of them, and I have the feeling he thinks they're more real than they are. And he misinterprets them.
For example, one of his favorites is Sunset Boulevard. He recommends it to people; even makes them watch it. And it seems he never for a moment realizes that HE is Norma Desmond.