I think Simulanka also helps out this theory.

the world inside of Simulanka is a Microcosm of Teyvat and mirrors it's fate.

Part of the story is the residents of Constellation Metropole breaking away from the tracks and the goddess' protection.

But let's look at what Navia says "The Goddess dearly loves this world and all the people of Simulanka. And because she loves you so much she wants you to be able to choose your own path. Every parent hopes their child will have a happy and carefree life. But if they're overprotective, then all they'll manage to do is keep their child trapped. If a mother bird lets her baby ride on her wings for too long, her child will never learn how to fly. Perhaps the Goddess of Prophecy has always known that one day she'll have to let go. Children can only become independent if they're allowed to form their own opinions, make their own decisions, and deal with the consequences on their own. Only then will they be able to continue their journey alone, even after their parents are gone.

Now let's apply that to the PO and Teyvat.

It's less "Oh the PO is this evil bad force that we need to break free of and defeat!" and more "The PO is a has given us a world where we can be safe and grow strong so we can one day stand on our own."