That's an interesting one because it really depends on where you're looking. On the big sites like Goodreads, the 'political allegory' and 'subversion of the classic Wizard of Oz story' themes absolutely dominate the conversation. People love to dissect how the novel flips the idea of good and evil, making Elphaba's 'wickedness' a product of prejudice and systemic injustice. You see a lot of reviews saying it makes you question the nature of villainy itself.
But I sometimes think the deeper, quieter theme of 'found family and tragic friendship' gets overshadowed. The relationship between Elphaba and Glinda is the real heart of the book for me—how it starts with loathing, evolves into this intense, unlikely bond, and ultimately fractures under the weight of their opposing paths. The reviews that really stick with me are the ones that talk about crying over that broken friendship, not just the big political ideas. It's a story about two women who fundamentally love each other but can't follow the same road, and that's just devastating in a very personal way.