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

[Rulakir]

How would Venat have known about the threat of Meteion if her memories were wiped as well? I also don't see the issue with her placing her hopes on the WoL given we literally recant to her about all the world ending threats and dangers we've overcome up to that point. Placing my faith in a ridiculously powerful warrior capable of overcoming challenges and despair again and again seems a pretty safe bet to me when facing a foe who wields despair as a weapon.

I wouldn't say a safe bet at all. Her plan outright failed in the 8UC timeline where the WoL dies. Plus, to get back to the WoL she met in Elpis required multiple rejoinings to occur. It makes the events of HW and ShB even more shady if you consider she was purposely holding off on saving the First because it needed to be rejoined in one timeline and come close to it in another.

[SDaemon]

I wouldn't say a safe bet at all. Her plan outright failed in the 8UC timeline where the WoL dies. Plus, to get back to the WoL she met in Elpis required multiple rejoinings to occur. It makes the events of HW and ShB even more shady if you consider she was purposely holding off on saving the First because it needed to be rejoined in one timeline and come close to it in another.

You're assuming she is cognizant of what goes on in other timelines divergent to the one she exists in and understands all the branching timeways. The way I see it, the Hydealyn of the 8UC timeline for all we know made the exact same choices as our Hydealyn up to the point their WoL died because to them they were in the only timeline. Or how would you explain 8UC timleine Hydealyn knowing they are 8UC timeline Hydealyn?

[Lauront]

You're assuming she is cognizant of what goes on in other timelines divergent to the one she exists in and understands all the branching timeways. The way I see it, the Hydealyn of the 8UC timeline for all we know made the exact same choices as our Hydealyn up to the point their WoL died because to them they were in the only timeline. Or how would you explain 8UC timleine Hydealyn knowing they are 8UC timeline Hydealyn?

Why does she need to be cognisant of it for it to count as an example of failure? Also, the WoL, who filled her in, is aware of it.

Why are you ignoring the method by which the Ascians are using to bring back their dead? That completely differentiates it from what happened to us, and only enhances the fact that it's not their desire to bring back their dead that we have a problem with.

She's the one who put the Ascians in that position, after fracturing every life on the planet and eliminating her kind to the point she even refers to herself as the "last of my kind", alongside "supreme deity". Besides, they're not talking about the Ascians but the sacrifices planned before the sundering but after the planet was revitalised. Sacrifices which not a single source is specific on (beyond references like "new life" after Zodiark stimulated regrowth of the planet), and which her group does not dispute the ethics of, suggesting they may well be something closer to the entities created in Elpis. Her group's issue is they think the ancients should "move on" to avoid an eventual doom, but as far as we can tell, she never really informs her people as to the why of it beyond vague musings about suffering.

[Rulakir]

You're assuming she is cognizant of what goes on in other timelines divergent to the one she exists in and understands all the branching timeways. The way I see it, the Hydealyn of the 8UC timeline for all we know made the exact same choices as our Hydealyn up to the point their WoL died because to them they were in the only timeline. Or how would you explain 8UC timleine Hydealyn knowing they are 8UC timeline Hydealyn?

I'm not assuming anything. She wouldn't know, thus holding off on intervening with the First. We know now that she had the knowledge and the power reserves to nip the Flood of Light in the bud had she wanted. This is the problem with her retaining memories of the future and supposedly wanting to get back to the WoL, it makes every choice she made along the way morally questionable.

[SDaemon]

I'm not assuming anything. She wouldn't know, thus holding off on intervening with the First. We know now that she had the knowledge and the power reserves to nip the Flood of Light in the bud had she wanted. This is the problem with her retaining memories of the future and supposedly wanting to get back to the WoL, it makes every choice she made along the way morally questionable.

"even more shady if you consider she was purposely holding off on saving the First because it needed to be rejoined in one timeline and come close to it in another." this assumes the 8UC Hydealyn knew to condemn her First so that another timeline's Hydealyn could save theirs. The more likely answer is both assumed their First would be saved based on the events they heard and moved in that regards.

Why does she need to be cognisant of it for it to count as an example of failure? Also, the WoL, who filled her in, is aware of it.

How else would you back up the claim that she held back saving the First so she could damn one First in one timeline and spare another in a different timeline, without her somehow knowing which timeline she was existing in to even make such a choice?