Who knew the 6.15 Omega Quests… (Spoilers)

[Iscah]

What do you mean?

They VERY CLEARLY had a culture of racial supremacy. This is shown outright in the Elpis quests and was shown in ShB with Emet's conversations about us not really being alive and being lesser beings.

They were literally growing what WE would consider sentient life forms to use as chattel sacrifices to Zodiark.

Emet considers us "not alive" because we are sundered. A fraction of what we should be. That wasn't a thing that existed in the time of the Ancients.

There is no sign that they are deliberately developing anything like modern sundered humans to use as sacrifices.

What we do have are vague and conflicting statements that the writers did a poor job of fleshing out. Somehow despite being close together in the narrative, there was no logical step from Shadowbringers' loose statements to Endwalker revealing them in more detail – somehow it veered off into different territory altogether and never addressed the nature of the sacrifices.

All we know, unless I have forgotten something key, is that "new life" flourished on the planet following the second round of Ancient sacrifices, and the remaining Ancients intended to trade it for the others' souls. Emet's story in Tales from the Shadows adds that this new life has souls itself, but as far as we know in this setting, all beings and not just human-like ones have souls.

The writers avoided answering our questions on whether this new life meant human life or not, and by the time we reach Endwalker, it goes completely unmentioned.

From what we currently know, the modern races were born from the Ancients themselves, not created by them.