What's the point with that quite lackluster story in Endwalker?

[Absimiliard]

It's called a bootstrap paradox. For it to exist someone or something (it can even be raw information) must travel into the past and change things in a way that both leads to and requires the aforementioned time travel to occur in the first place. It has no defined beginning or end as a result. At a base level the key players in maintaining a bootstrap paradox operate in ignorance and therefore lack agency, but this can change when one or more parties are somehow made aware of what's happening. The paradox becomes consensual the moment even one of the participants necessary for its perpetuation is afforded knowledge and therefore agency, although the prospect of breaking one of these opens some very migraine-inducing cans of worms.