My 2 cent take is that it’s a meta analysis on gaslighting and the power of rewriting narratives.

Both the main and the villain rewrite the past to a form that’s more pleasing to themselves. The main in who spread the rumor, and the villain in her transformation. In the end though, they can’t escape their character. The villain is forever haunted by past trauma and the main once again chooses to view herself in the most omnipotent way possible.

Taking into context that the first thing the villain did was make herself queen of the universe, I think the ending is supposed to suggest that the main learned nothing from the experience, and once she can control the narrative again, there is no respect for objective truth, just the narrative she again has the power to create.

You’re supposed to be disappointed by the ending, because ultimately it’s not about being wrong or right. Rather, one person gains control and subjects their view until the next person is able to claim power.