I agree with the premise that in order to discuss anything one should have some knowledge of it. However, the idea that one NEEDS to understand one version of whack-a-do from another version of whack-a-do in order to understand what that person knows is bull shot from the get go is nonsense.
I claim that comic books are about fictional characters. If someone tells me that in order to claim this I need to compare notes with those who think that the Flash is actually faster than Superman, or that I need to understand which Planet the Silver Surfer or Thor comes from before I can call bull-shit...well that’s just bonkers stupid.
Religion is fiction. I don’t need to read all the versions to understand it or to be able laugh at it. Was Rumplestiltskin a magician or a wizard? GTFO.