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

[Lunaxia]

That the Plenty are supposedly intended to show how the Ancients would have turned out just doesn't sit right with me - by that, then, it's implied the Ancients deserved to die over us because one day their way of life will end? So will that of the mortals, only (possibly) minorly delayed through their more finite lifespans and inclination towards war and power struggles, as well as possessing constitution more prone to disease and injury. It's more likely they'll bring about their end in a similar manner to the other two races depicted in the Dead Ends than somehow managing to wait it out until the death of the universe, and then what? Are they truly trying to push the narrative that it's better to propagate mass suffering to needlessly prolong a race's lifespan than to attempt to attain a better way of life for all? What makes the mortals so much more deserving of living out their time how they see fit than the Ancients?

They make a point of saying everyone has a right to life, and use that as the justification of Hydaelyn's sundering the star and the survival of mankind as it is now, yet at the same time they're saying that because the Ancients would have doomed themselves trying to make a better world, what happened to them isn't as big a deal (while also telling us to make the world a better place for those that "come after"! ...but not too quickly, apparently?) It just smacks of hypocrisy, but the "good guys" live so it's all right, evidently.