Did Zodiark ever do anything wrong?

[Alenore]

We, the player, don't exist without the Sundering. From a gameplay standpoint, it doesn't make sense to have a plot point for Venat to solve the problem without a Sundering. Doing so would wipe us out, along with everything we've done in the game.

Yes, that's why the story should never had given so many options to Venat to try solving the issue in a different way.

Her choice is fine if she doesn't have foreknowledge of what it entails, because she's doing the best she can and decides to side with life in the long run. It strengthens her stance on being against the sacrifices and wanting to give all life a right to self determination.

It's also acceptable if she knows the future and that it'll lead to Meteion's downfall and saving Etheirys. Even knowing what it would cost, she might think a "safe" solution is bettert han an unknown.

So we're left with her actually fulfilling all the horrible conditions to a timeloop and taking a huge gamble knowing it's currently looking, at best, very bleak.

Regardless of the paradox, if she finds a way to stop Meteion and avoid the Sundering, then she also unmakes the future worlds that she already knows will exist, and that we come from. It's easy to say, "that's how it should be", but would we be ok with allowing a Rejoining, regardless of the lives that now live in order to set things right? I don't even know if there IS a "good" decision in this situation. I just took it as Venat accepting that what happened has already happened, even though she is in an earlier point of the timeline, and she works to ensure that *we* continue living in the world as is it is now.

I'd hear this argument if Endwalker didn't follow an expansion where G'raha seemed fine with apparently dooming his timeline to save us because "that's how it should be". And nobody really raising a single concern about it.

On the contrary, the fact G'raha didn't disappear is actually a hint that timelines are not erased, which is confirmed out of universe by the corresponding Tale. I'd expect the scholar figure that Venat is to notice that.

Which means that if Venat actually decided to act on the informations we gave her, the WoL would be in the very same position with an Hydaelyn in our world to potentially grant us the location and the aether to end Meteion, but with a chance to save her civilization.