LOL sure thing.
So, moral relativism is the idea that morality depend on cultural, social, or personal contexts rather than being universally fixed. Wicked (both the play and now the movie) aligns with this philosophy by demonstrating how labels like "good" and "evil" are subjective.
Elphaba is portrayed as misunderstood and victimized. Delving into Elphaba’s backstory invites the audience to empathize with her. Her wickedness is done away as a label imposed by others, while her evil actions are watered down or painted in a positive light.
On the other hand, Glinda is shown to be a morally dubious character (per universal standards) in spite of her being characterized as "good".
Ultimately, the hypocrisy behind the whole concept is that the people behind the play (and movie) KNOW that there ARE universal values behind the ideas of good and evil, and they lean on those values to recast Elphaba as a good person and Glinda as a not-so-good person. The only commonality they have with the "original" characters from Baum's book "The Wonderful Wizard of Oz" is the name and some of the looks.
In the original book, Elphaba rules over the Winkies as slaves, controlling them by fear. She is also actively hostile against Dorothy and her innocuous friends, sending several sorts of enemies to attack them (including wolves). She is also greedy, as she plans to steal Dorothy's magic shoes for her personal gain. Hardly a "misunderstood victim". On the other hand, Glinda reassures Dorothy and her friends, and rather than craving her magic shoes, she teaches her that they are the key to get back home, as well as how to accomplish this. She is widely known to be kind, honest, and just/fair, and never uses her magic to harm others. When Elphaba is defeated, she declares that the Winkies are now free (rather than ruling over them or ignoring them with the potential of chaos or someone else ruling over them). She also helps Dorothy's friend find fulfillment in life.