The Reasoning behind The Sundering? (*6.0 Endwalker Spoilers*)

[EaraGrace]

Part of the reason why it's hard to know if the Rejoinings were actually failures is that she did need them to happen in order to reach this conclusion that is ideal for her. It's hard to argue that Venat was freewheeling it and trying to go for an alternative series of events when everything turned out exactly as WoL described to her and she was actively abetting at least some of it.

A timeline where she didn’t have to devote the vast majority of her power to maintain the bonds on Zodiark, where civilizations didn’t have to reset every few millennia due to a calamity, and wouldn’t need her strength to resist the Ascians seems much more conducive to her goals.

And I would say it’s very easy to argue it, given we know she was acting to stop calamities. Her support of Tenzen and Ramza, the aid she offered to the various WoL throughout history all point to that end. And then there’s her statements on the matter, which I posted earlier, all make clear her thoughts on how she approached the Rejoinings.

[Veloran]

A timeline where she didn’t have to devote the vast majority of her power to maintain the bonds on Zodiark, where civilizations didn’t have to reset every few millennia due to a calamity, and wouldn’t need her strength to resist the Ascians seems much more conducive to her goals.

Sure. So why didn't she just tell them what the threat was? Even the Ascians would want to see the Meteion ended, and during Allag for example would have had more than enough resources to have a go at her.

Her support of Tenzen and Ramza,

They were both dealing with little-c calamities. That is to say the issues of the Auspices and Ultima appear quite unrelated to the Ascians and the Rejoinings, they were just local issues. And yes she has created WoLs around the time of various Calamities, but by the very nature of our knowledge of them they seem to have a 100% failure rate. If anything their presence had only served to mark Echo-users as portents of doom.

Not to mention her most well-known creation of WoLs by far, on the First, was actually directly causing the Calamity there. And since we now know she's not just a mindless robot dispensing crystals like a slot machine, we can only presume that she knew what was going on and was actively abetting it. Presumably because she knew it had to happen to reach WoL's future, and thus meet her own ends.