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

[Aravell]

I just started this discussion because like I said since I came in with the interpretation that the barrier didn’t protect the ancients then venat’s actions made more sense than any other alternative presented in a reasonable timeframe of the event, using that idea venat is ultimately good if highly flawed, using the idea that the barrier did protect the ancients then venat goes from “highly flawed but ultimately good” to “arguably worse than those she fought against”

What I got from the story is that Meteion would never penetrate the barrier, Emet-Selch did say that Zodiark rewrote the laws of the star, this is information that Meteion isn't privy to, so the angle of attack will never change, meaning the barrier will hold up until Zodiark is eliminated. It's why Fandaniel piloted Zodiark like a mechsuit to attack us, he wanted Zodiark gone so Meteion can get through.