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

[KizuyaKatogami]

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I think the other problem people have, along with all of the other ones that have been stated in this thread in regards to the time stuff, is that they use two different types of time travel over the course of only two expansions(Graha and Elpis). It's like they only introduced it because they couldnt come up with any other way to make the plot. They had to use two different instances of time travel to try and make it work so it just makes things unnecessarily convoluted.

[Imperius_Relampago]

I think the other problem people have, along with all of the other ones that have been stated in this thread in regards to the time stuff, is that they use two different types of time travel over the course of only two expansions(Graha and Elpis). It's like they only introduced it because they couldnt come up with any other way to make the plot. They had to use two different instances of time travel to try and make it work so it just makes things unnecessarily convoluted.

I personally wasn't a fan of ShBs time travel concept. It made no sense whatsoever, and made no effort into explaining it. It is clearly meant to use the Black Hole Theory along with the World Line Theory. The Black Hole theory for how they were able to travel back in time and across shards, and the World Line theory, for how Graha was going to change the past. Essentially, if I were to use FFXIV terms, the Black Hole theory posits that by compressing the data of the brain (2.5 petabytes) and body, via Aetheric manipulation, to a size sendable by the Crystal Tower, along with Graha's link to said tower, then both the Crystal Tower and Graha would be able to traverse time via the Life Stream with no potential for being stuck (Again, barebones'd this theory while using FFXIV terms as opposed to real terms used IRL). The World Line theory, however, posits that there is only one World at any given point. When a new World Line is realized, the previous World Line fades back into nothing but potential and the new one reconstructs in its place. So Graha was from World Line A, but he travelled to World Line B's past through the use of the Black Hole theory. He changed the outcomes, and as a result, World Line A faded into nothing but potential, and Worldline B became World Line A. Endwalker's version of time travel is a lot more simpler in that it is based off of causality.