What worldview explains the universe in The Wizard of Oz?

I think the worldview shown in wizard of oz is mostly postmodernism. The entire movie is just a dream and everything seems totally fake and impossible in actual reality. The wizard isnt even reall in the end, hes just some dude talking "like a god." Which i thought was completely retarded. The whole scarecrow and the tinman and lion talking and becoming best friends wiith her is totally unreal. And in the end she just wakes up at her house learning maybe one thing out of the whole story.