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

[Eisi]

Even if we assume her intentions and convictions were altruistic, the action taken as a result of those convictions should not, under any circumstances, be portrayed as heroic. Whether the character suffered as a result of those actions is also largely irrelevant, given the sheer scope of the crime committed. In this instance, even had the writers successfully conveyed what they intended, I don't think I would be onboard. There is never a justifiable reason for robbing people of their future.

There is, if it's the only way to save the world from certain doom.

And that should have never been the story in the first place.

I'm talking about fundamental pillars of Endwalker's story that should have never been written the way they were.

That includes the timeloop and the introduction of Dynamis in the way that it was.