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

[jameseoakes]

That doesn't explain why or how all the shards ended with the same result in races. The first only has two races that were made by others. The pixies and fuath are the result of souls being weird. Though technically the pixies were/are constructs as there was a quest dealing with them in Elpis. What makes more sense is if the new races were the new life/generation that came about after the 2nd sacrifice. As it also explains partially why there are more who can't awaken to the echo due to being born post final days as seeing a star shower tends to be the key. Than there are those who are capable of reawakening to the echo. The other is more new souls over time were made.

That's not what the games dev team has explicitly stated and if that is the case then we are back with Venat intentionally betraying and purging her own race to make way for races that fit her ideal of how to confront the final days which is eugenics and evil