“Why do you think he doesn’t know what it means?
The same reason I think you don’t know what means. The context is wrong, and If you knew what it means you wouldn’t be asking.”
I know what it means. I think you missed his context, and that’s why you thought the context was wrong.
He is pointing out that the fact that many people believe in something does not prove that it is not a crazy belief. Many people believe in immaculate conception, but it is a crazy belief.
What doesn’t make sense about that, and why would that imply that someone doesn’t know what it means?