Klaus, you could call that theory "Moyesteta" … but now I'll give you "Pep's Homunculus" …
We do have a few things on Arteta. He grew up in a small town with a demanding and critical father. He was above all a disciplined player by the end of his career—a guy who'd carry out a role with great care, commit professional fouls where necessary, give a bit of dignity to the captain's armband etcetera.
I reckon we're looking at a manager who contributed to technical work as an assistant at a top club where personnel management wasn't his responsibility and high standards were already established with a ridiculously talented squad, and came out of that experience with a savage case of the Dunning-Krugers that made him think he'd mastered the human spirit—but in fact he doesn't know how to lead people.
What we're seeing is man management marked by ignorance that appears publicly as negligence and stubbornness, and a neurotic regime of tactical instruction in which the imagined freestanding authority of Arteta's word as father and master absolves him of match day responsibilities, and licenses his punitive outlook.