[7.0 Spoilers] Some lore questions I have about living memory and heritage found

Forgive me for forgetting or I'm clearly missing something 😭

As far as I can tell the buildings were made of electrope, which they continue to use in everkeep. I am aware living memory is still in the reflection, but traveling between the source and the reflection doesn't seem to be a problem so.. why are we not able to keep it running separately from the endless?

As for the endless in living memory- why didnt we let them live until the soul supply ran out? Instead we turned off the terminals which turned off everything and we "kill" everyone even though we could've left them? I've been confused about this since the expansion came out. Couldn't we have defeated Sphene and left it at that?

Another question I have is as to why the dome in heritage found still has a part of the calamity in it, while in living memory its shown that the weather has returned to normal?

Again, apologies if these were answered in the story and I forgot about it.

edit:
thanks to everyone for answering! if anyone stumbles upon this and want their answers, here they are:

living memory - was shut down because there was no reason to keep it up. I find this answer kind of disappointing because it is now one of the ugliest zones in the game that we are left with to do fates in for the next 2 years. the impact of it worked and it causes me dread, but its genuinely so ugly lmao 😭 I definitetly feel like there couldve been some usage of the area, like keeping the golden city alive for the sake of the legend?

the endless - some of them stated they wanted to die, like Erenvilles mom and Kriles parents. I'm not sure if the children in LM had any say in that. Another reason is they were using up power for no reason, as they wouldve "died" eventually and the area wouldve been empty (I still feel like we couldve kept operating it for the sake of keeping the "golden city" alive, but oh well)

why didnt Sphene stop us? - she was busy deleting her personality (and in case you need further context, she was doing that so that she could fight us without caring)

heritage found and the dome - while we cannot confirm for sure, it seems implied that everkeep and therefore living memory were above the clouds, as in, the storm/calamity was under the clouds. besides LM having the clear sky, the Zoraal Ja trial has a clear sky as well. meanwhile heritage found/the dome were under the clouds, so the calamity may very well still be present

edit 2:
To be clear, I never intended for my question about the endless to be about whether they are alive or not, but I was wondering 1) why/how they are connected to the buildings and 2) why we didn't leave them to exist for the remaining time they had. I don't care whether they were actually killed or not, or the morality of it, I was more so wondering why not leave them be. Because if I was in the situation of being a memory that's conscious/sentient, I think I'd want to spend some time doing stuff I'd like to do with the little time I have before going away, but maybe that's just me. Maybe they were okay with leaving precisely because they knew they weren't properly alive.