Inconsistencies with the sundering (Spoilers)

[PeaTearGriffin]

That isn't merging, though – it's going back to the "old" narrative that Hydaelyn battled Zodiark with no mention of it ending in a philosophical clash between the factions.

As the other poster pointed out, we get a hint of this philosophical clash between the factions in the tales of the dawn quote - "Venat, along with the archivist and their like-minded companions, objected to this undertaking. The future, they believed, must not bear the cost for saving the past. Only in accepting pain and loss─by learning from the mistakes of yesterday─could they greet the morrow. A power such as Zodiark possessed was anathema to the progress of man."

I think this is very much saying there was a clash between the ideologies of those that supported zodiark and those that supported hydaelyn. This should've been included in the endwalker cutscene too.

Either they really did try to overwrite "the fight" with "Venat turned up at a meeting", or they've written it confusingly enough that a fair chunk of the audience feels like they did that, and either way they have made no attempt to explain or justify the discrepancy – not in further stories and not in interviews. They just avoid any explanation of it, which makes me feel like they don't actually have a good answer for how to reconcile the two.

And this is why there's a few of us on these forums that think the endwalker cutscene is a retcon.

[kpxmanifesto]

As the other poster pointed out, we get a hint of this philosophical clash between the factions in the tales of the dawn quote

This should've been included in the endwalker cutscene too.

Yeah, not only should this have been included in the cutscene, but it wouldn't have hurt to expand upon this in Tales of the Dawn too. They spoke about it briefly in Tales, but sadly, it leaves a lot on the table.