Zodiark's Codex entry what do we think about it?

[Aneshda]

The only differences between zodiark and other primals(not even all of them) is the amount of aether used and a person to serve as a vessel for the summoning. I'd imagine the people of the world were deeply traumatized by the final days and Zodiark, put an end to them. He was created with thoughts of salvation, of course they worship him, not unlike a god.

It's a valid question. The people that gave themselves did so willingly, sacrificing themselves so that others and the star itself might live. Did they do this under the assumption that they'd be brought back? Nothing in the game suggests that. Souls inside zodiark said "We are the will of the star, now and forevermore.

Hythlodaeus on the Moon said, that Hydaelyn didn't allowed them to return to the star. So I guess they wanted to return but couldn't untill Zodiark was killed.

[Cleretic]

Hythlodaeus on the Moon said, that Hydaelyn didn't allowed them to return to the star. So I guess they wanted to return but couldn't untill Zodiark was killed.

No he didn't. Like, in no way at all was this something Real Hythlodaeus said in his moon scene. I just reviewed that scene, and this is the only part where he even mentions Hydaelyn. (Actual line bolded, adjacent lines also included for context's sake.)

We remember in vivid detail the events leading to our purgatory.
The plans and plots for our resurrection. Hydaelyn's intervention, and Zodiark's--and the star's--final fate.
And then we drifted in a waking dream, our minds steeped in fog...until you came.

For extra clarification, while this was a scene with a bunch of other nameless spirits that could've been confused with Hythlodaeus, none of them mention Hydaelyn either, they were all locked in on that whole 'sacrifice ourselves to bring back our paradise' part; honestly it feels like they were completely in a mental stasis and don't even know time has passed since their sacrifices at all.

So at best, you're misremembering something, and I'd recommend you look back at things to refresh your memory and find the thing you are thinking of. At worst, I worry that you're remembering nothing and have been working from a complete misconception this whole time.