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.

[Absimiliard]

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.

Had the doom been certain, you might've had a point. ....But it wasn't. The narrative shows us the ancients actually were capable of interacting with Dynamis, it shows us they were on the cusp of fully realized space travel, and it even shows us that Zodiark would've been capable of shielding the world from the end song for a vastly longer time, had he not been destroyed. Showing us all these things kinda torpedoed the crap out of the idea the ancients were helpless. It made it seem a lot like Venat withholding all that information probably contributed heavily to things getting as bad as they did. To make matters worse, we're also shown Emet-Selch and others doing pretty much whatever they want instead of serving only Zodiark/their people, up to and including the former trying to abandon the plan entirely and just live in the sundered world. Kinda destroyed the idea the ancients were completely lost to tempering.

To the rest of what you're saying, I agree with you. Several things were simply misconstrued and mishandled, and it didn't really begin with Endwalker. If you look back at the final patch of Shadowbringers, you'll notice the sudden shift toward jank.