Final Fantasy has discussions on fate. Fate is a predetermined course of events. Think about Shō ga nai (しょうがない ?). It means
“it cannot be helped”
“nothing can be done about it”.
Many of the characters are the way they are due to this concept. This tailspin into the problem of circumstantial moral luck, where
“a moral agent is assigned moral blame or praise for an action even if it is clear that said agent did not have full control over either the action”
For instance, Seymour Guado grows up in a hostile environment where he adopts a negative view of life. Yuna, on the other hand, grows up in a loving environment.
Due to her position, she adopts a more positive view of life. Both are biracial, living in societies hostile against the races of their origins. Both could have faced persecution. But no one knew Yuna’s identity. Everyone knew Seymour’s. Due to the circumstances of their respective environments, they end up adopting mutually exclusive worldview. Yuna loves her father. Seymour doesn’t.
Many other Final Fantasy titles have this duality. Because of their place, they act in wildly different ways. Final Fantasy X inform us that actions depend on characters, which depend on circumstances.
So then, Yuna is only good because she grew up in a good environment. From there on, she can intuit the right thing, even when it isn’t immediately obvious. Her upbringing set the path of righteousness for her. Eventually, she’s capable of doing right.
Tidus brings with him the moral attitude needed to push Yuna in the right direction. But Tidus is dependent on who he, as a dream of the Fayth, is based on. So then, seemingly random characters influence other characters. They take actions only they could be who they are as good people. Since they’re basically good, it seems they can only do the morally right things.
So then the problem arises: does Tidus deserve thanks from Yuna? Do any of them deserve thanks for saving the world? Should we feel hatred or pity towards Seymour? Could Seymour have possibly seen any other option? How different could Final Fantasy X have been if the roles of the protagonist and antagonists switched?