OZ worldview

I believe that the worldview of the Wizard of Oz is postmodernism. Everything I've read seems to point to this conclusion because in the story the main character has her own reality. The main trust of the story is to find the Wizard, a being supposed to be all powerful, eventually they find out that it is just a dude pulling strings behind a curtain. The imaginations of the characters created their own reality and that is pretty much the gist of postmodernism. Also in the end the main character finds that she could return whenever she wanted.