Look, we've been trying to convince
@Chaosmancer for literally pages of this thread! We've used examples like Conan, John Carter, The Witcher, Moorcock and other Sword & Sorcery pieces.
To each one, the response has been "I don't know it, and I'm not interested in learning about it."
Even worse, when we go deeper and try to explain the deeper themes and motifs of S&S, the reply has often been "I don't get the appeal," or "Why do I need GH when I can do that in the Forgotten Realms?"
I think the OP, and others on this thread, have made a compelling argument that Greyhawk is a compelling sandbox world with darker themes, a more grounded world, but maintains some classical fantasy to make it easy to pick-up-and-play.
At a certain point, we need to understand that some folks really aren't that interested in being convinced, and just like the argument itself. If you're still reading and replying to page 30 of a thread and still feign ignorance, I think that speaks volumes.