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

[PawPaw]

Also, this doesn't really have to hinge on anyone's word either. We were able to conveniently use our Echo on that floating island to watch Hermes talk to Meteion on the waifu space probe launch day. Is this just a Sundered Azem thing? I suppose so, otherwise an Ancient with this ability could just have watched the post-Ktisis cutscene, and oops.

I thought that that scene made it pretty clear that this was an "everyone here can do this" thing that we were just being taught how to use properly use for once. She did say that this was how they preserve history and I assume she wasn't just talking about herself. Just a part of the original powers that the Echo stems from.

In any case, it negates everything that comes after because if you lose a memory, seems like it'd be damn easy to get that back by walking a few feet and activating your brain but...I'm just looking at the story too closely like Yoshi-P said, I guess. My bad for expecting basic logic in said story.