Living Memory and the Endless is just one big very stupid and not well thought out Trolley Problem the writers dumped on us.

You know, the philosophical thought experiment that became a meme in and of itself? Yeah, that Trolley Problem. The runaway trolley is headed towards five victims, but you can pull a switch and send the trolley down another track and only kill one person. Something-something needs of the many vs few, utilitarianism, ham-fisted metaphor that isn't very useful in practical applications, yadda yadda, not getting into all that right now.

Living Memory puts all the people of Etheirys on the bottom track and all the people of Living Memory on the top track that we the players as the Warrior of Light can flip the switch to change the trolley on. But then the writers encountered a problem: that might make the players feel really bad about killing all of these people, even if it was to save Etheirys. So instead, they set up a scenario where all of the Endless are just digital reconstructions of dead people's memories and aren't really "people" at all. Problem solved, now the players and the characters don't have to feel bad about killing every last one of them, because they were already dead to begin with.

But wait, that makes another problem for the writers, because they made this whole zone full of a bunch of characters and they need the audience to have a reason to care about them. So the writers decide to make the players stop and talk to them and get to know them as people first. That way the audience will care about the Endless and feel sad when they have to shut them down. Problem solved!

BUT WAIT, that makes the Warrior of Light and co sound like complete monsters, reuniting lovers and putting on a play for kids right before erasing them from existence. We can't have that, that's not good. So they make sure Caciua is there the whole time reminding the players that the Endless aren't real people and its fine. "See?" the writers say. "Even the Endless who know they're about to be erased don't mind! Don't feel bad! Just feel sad about Erenville and Krile's dead parents, that's okay, you're supposed to feel sad about that."

They can't make up their mind if the Endless are real people that we should give a damn about or not. They gave us a trolley problem where the guy on the top track is like, "Hey buddy, I know you may feel bad about throwing that switch and killing me to save the five others, but I'm not actually a real person, so it's fine, don't feel bad! But I sure would love if you took a moment before the trolley comes to get to know me as a person and share some ice cream with me, that would be real swell."

It's incoherent.