Inconsistencies with the sundering (Spoilers)

[Raven2014]

I don't think anybody here is asking for total realism. What some people are asking is for square enix to not retcon the story from shadowbringers. Some people may see the sundering cutscene as metaphorical/symbolic but other people see it as a continuity error. You can make a cutscene symbolic or metaphorical and not have it change the story.

I know, all I'm saying is imagine an alternate ending where the ancients do have the will to fight. I don't think it's beyond reason for the ancients to muster the will to destroy meteion to secure the safety of their people.

I don't see it retconning anything, it just focus on answering a different answer. You want to see a cinematic implementation of the conflict mentioned in ShB, but this scene isn't about that. The scene is not about the civil wars or conflict between the 2 ancient factions, but about the reason for it. The short dialogue is meant to show why Venat decided she had no choice but sundering the ancient, not to show your the epic power struggle between her and Zoc (which is what the ShB portion was about).

In fact, that's pretty much the answer to your 2nd quote as well. The will to fight is not what is needed. You're pitching a civilization who had know nothing but a blissful paradise existence against an entity that had seen despair on countless world, they can not win. The Ancient can't fight because they didn't know who their enemy was, and Venat didn't disclose it because precisely what happened in that CS. It showed that she did not make an arbitrary decision, and tried to convince them to change. But once she saw the Ancient would rather die to get back their old paradise instead of accepting the reality, she know her people had no hope in winning that battle. Had she let them know about Metion, it could very well be the Ancient gonna march right to their demise in their omnipoten ignorance/arrogant.

It's also why the most meaningful interaction (for me) when the Scion met Hydaelyn was Alise's answer to her question "are you ready?". In which Alise reply was "sure, no problem, we beat her up and win for sure ... is what the old me would say. But do we actually have a chance?". The maturity in Alise's answer (who used to be the most cocky of the Scion) symbolize the growth Hyadaelyn was seeking in humanity. The agony and acceptance of your own powerlessness, the pain of fear and uncertainty, yet despite that still find the courage to forge ahead is what separate the current humanity and the Ancient.