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

[KizuyaKatogami]

Youre ignoring my question. If she didnt sunder the world and only Zodiark was around what wouldve that helped the star?

First of all, what do you mean Zodiark consuming more souls to preserve himself? Shadowbringers and Endwalker both ended that unsupported idea that he was some blood god that continuously ate souls. Disregarding that though, if she didn’t sunder the world and instead told them the truth of everything, they might’ve not even needed to summon Zodiark in the first place. We know the ancients can create beings capable of manipulating Dynamis. They had a facility they could use to learn the way of manipulating it themselves. There are numerous options given to us.Let’s not forget btw, her/Hydaelyn is the actual primal that wholly consumed souls until there was nothing left. At least the souls were still there inside Zodiark.