I dunno, I kinda never quite believed the Ascians that their society was a perfect utopia in the first place. I didn't get that impression from any of what we saw in Amaurot. They just seemed like people with very alien philosophies relative to the modern First. Distanced from the concept of danger, apparently, but just as prone to hubris and arrogance and folly as the sundered they so looked down on.
Endwalker just reinforced the opinions I already had of them.
Also the only divinity I remember being mentioned related to the Ancients was from the perspective of Sundered people who had nothing but broken and faded memories of what, to them, was the creator and destroyer of the world and a society that their unsundered selves clearly thought of as a paradise even if it also very clearly had an ugly underside.
Genuine question here, but what would they need to retcon to make that the case? Is it explicitly stated anywhere that the genius scientist Lahabrea everyone seemed to love is the same Lahabrea we kicked into dust in Prae? There is a time gap between Elpis and the Final Days.