Nature of the Sound

[Vyrerus]

No, the impetus for Hydaelyn's creation was that summoning Zodiark doesn't actually stop the Final Days, it just delays it. So they need to summon Hydaelyn to create a permanent solution. You hear this from the recording of the Ancients that summon Hydaelyn at the end of Anamnesis Anyder.

What's not directly clear here is what is Zodiark doing that just causes The Sound and the Final Days to come back around after an extended period of time.

The thing is, even though that's what they say in the recording, it's not a fact. It's just what they believe. They were afraid that Zodiark wasn't a permanent solution, because they were either aware that the cause of the Final Days hadn't actually been rooted out, i.e. Zodiark is symptomatic treatment, or that Zodiark's miracles would just lead back to retriggering the Final Days again... somehow.

Really, that recording just proves the Hydaelyn dissenters to be vainglorious rebels, with an idea that was ultimately no better than what the Convocation had in mind, except on the matter of protecting the new life. Which we aren't given much detail about. It'd be one thing to protect the new life if it were freshly sprouted sentient life, life aware of itself. It'd be another if they were asking every other Amaurotine in existence to trade the possibility of getting their loved ones back for what amounts to cattle(at the time).

There's still many factors we don't know, too. Like if the Sundering was intentional or not. I assume that it wasn't, but if it was the only way for Hydaelyn to protect the new life, then that means that the Dissenters essentially risked the existence of everyone and everything. I think it wasn't intentional, but that proves that the dissenters really didn't know what they were doing, since their checks and balances for Zodiark wound up completely altering and then having dominion over the star(and all its pieces). Not too mention, it was an inherently violent course of action.

Hydaelyn has some 'splainin to do!