It really doesn’t matter if you “spoil” most story arcs, because as it turns out, for most stories, it’s not the story arc that matters. On the contrary, if you follow the familiar, recognizable beats and cadences, it gives you a lot more room to experiment and build nuanced meaning, because a lot of the meaning comes pre-established.

An apple is just an apple, until you’ve tried a Gala, and a Honey Crisp, and a Braeburn…they are very different, and you can’t really appreciate that until you've first had some kind of apple.

Compare that to standard Disney movies .. You can guess from the beginning what will happen.

Also watched Mononoke first. My favorites are Naussica and Totoro :) all movies form Miyazaki are amazing and watchable. If you wonder about his skill,check some of the ghibli movies he was not involved in.

Kurt Vonnegut wrote about this when he was in graduate school. He noticed, for example, Cinderella and the New Testament have the same story arc.

His advisors rejected the idea for his thesis, but it stuck with him and he wrote about it a few times.