Less of a problem. Themed entertainment is storytelling and it makes sense for World Showcase to include stories from the people’s of the world. My preference is towards myth, legend and folklore over the writings of a single author, but time also gives a single author more weight. Stories that are Disney’s creation and set there (especially for a joke) I see as having no place in World Showcase. Things get murky with Disney’s adaptions. At a minimum there is a convenience to using Disney’s character design, typically because as folklore they lacked a very specific image and it wouldn’t make sense to have a second look, which would have to be explained, that is still Disney designed. The murkiness really comes from the changes that occur as part of the adaptation process, at what point is the adaptation so far removed from the source that it’s really a separate thing? At what point does focusing too much on Disney’s adaptations undermine the actual notion of celebrating world cultures?So you don't take issue with Aladdin in the Morocco pavilion?
Aladdin definitely sits in that murkiness not just because of the changes from the source material but also the questions surrounding the story’s origin. But let’s say the movie was a more faithful adaptation and we more conclusive evidence of the story being of Arab origin. Then it would definitely belong in an Arab pavilion even though the setting of this hypothetical movie is now China.