Who knew the 6.15 Omega Quests… (Spoilers)

[Cleretic]

Except they could have counteracted Meteion had Venat, I dunno, told them what they were dealing with? her excuses never sat right with me.

No. You can't just say that without evidence, and all the evidence is on her side that she had to be careful about this.

We know that she can't just be completely open with this, because the general public would take this information extremely poorly. ...as we see very clearly when the End of Days actually comes and they take it extremely poorly. As to who else she could've told, the big problem is Hermes; as mentioned, if he learns what he wiped from his memory he's likely to fall into a depression that either makes him go turncoat or drop off completely--which is bad, because his knowledge of dynamis is required to make Zodiark, which is a necessary element of making sure the planet doesn't just get turbo-murdered. This also means she has to keep people who would tell Hermes in the dark--that counts out the 'tell the public' approach on a second count because you know protests would hit him eventually, but it also shuts Emet-Selch out of the picture because he's a known stickler for the process, and the process has already failed us. The same approach is probably why most of the Convocation was kept in the dark, to make sure nobody either told or ousted Hermes. We know she actually did try to contact Azem, so they were a potential (and probably good at keeping their mouth shut if they're anything like us), but they didn't pick up the proverbial phone for reasons intentionally left ambiguous.

So who else could she tell? Hythlodaeus, who may not have any relevant skills, and is also kind of a blabbermouth? Themis, who she may have never met, and probably got inducted into the Convocation soon after? Reasonably, the people she got together actually were the best people for the job--and we now know thanks to The Watcher that they were at least partially comprised of academics, who actually could have thought out this problem. Venat actually said that she didn't want the future we told her about to come to pass, so her and the brains trust she compiled probably did think out the problem put ahead of them. And they came to the Sundering decision, with a heavy heart--Venat knew that was the plan that worked in one timeline, but that also wasn't evidence that she could communicate to others, so they had to have come to and agreed to it through independent thought.

If you think they had a better option, you'd better have a damn good piece of evidence for it. You can argue with decent grounding that they might not have needed to take the fight to Meteion anyway, Zodiark would've held up indefinitely, but you can't argue that there was any other way to take that swing. Even Emet-Selch disagreed with you about that from beyond the grave.