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

[Turtledeluxe]

Aether is consumed and renewed with time as part of the cycle of the world.

That's nice and all but the reason I even brought it up is because originally either you or someone else (probably both) were still in the "lol ancients casually do this" phase. The post a few pages back you all liked. Thr goalpost has moved since then and we now agree it's not so common. Aether changing up has nothing to do with it-- it didn't occur to Emet because the past viewing thing is particular to Venat and whoever she teaches it to. We have known this for several expansions yet I still see it commonly thrown around as though it is true. It's not. The Echo is a general gift with a diverse array of applications depending on the user and their interest /aptitude.

What matters is the direct implication they didn't actually try to prevent the summoning in the first place.

Venat telling us she isn't going to cause people to panic is not equivalent to being told she did nothing. Please stop trolling.

here's evidence the ancients were in the midst of developing space travel. The ancients kept their different sciences separate for the most part, meaning a group working on a project in one field would not necessarily know about projects in other fields, let alone about how progressed they are. Hermes had area of expertise, and in that he created the Meteia. Other ancients worked in their own areas.

Emet straight up says they didn't have the technology. I don't know what to tell you.

problems tend to be a lot easier to solve if you know the cause. This information is oft times vital not only in the process of resolving the issue but in the speed with which you do so as well as the efficacy of the solution chosen. .

Except the cause is Hermes so telling Hermes doesn't seem helpful. Secondly dynamis was an emerging thing at the time. So they were handicapped on those two points alone really. Either way Venat telling everyone everything, even if she did, is not really an argument for fixing Endwalker or averting the final days. It may have changed slight details but the outcome would be the same.