Jumping into this conversation (if I may?)...
THAT is the crux of this argument. I think we can all agree that theme parks are places where you go to escape reality, to be transported to a different reality. The question is: is it "better" to be transported to the world of a movie or IP (Carsland, Avatar, etc), OR should it be an organic space that mimics and blends elements of reality to create a new or distinct place (Africa at AK, Adventureland, etc.).
It's replicating versus mimicking. Carsland replicates; Adventureland mimics (and at their best, areas like Fantasyland sort of straddle both).