He explicitly talks about his failures at the end. I don't think a narcissist would get that far. Although you did say you're projecting, so maybe this is not useful.
He talks about his failures in a way that minimizes his failings. There's nothing wrong with him. If only he knew this one simple trick then he'd have a perfect marriage!
Even if his overall thesis is correct, I bet you that his ex would not cite the glass as the top example. There's probably much worse stories that make him look like a giant asshole.
