I see the point I was trying to make was missed.
Final Days: The original extinction level event to which Ishikawa says: "For example, is what Hermes did wrong? Or was it the first step for humanity?"
Sundering: Genocide of the Ancients to which Yoshi-P says: "I think everybody has a lot of different feelings about Venat and we wanted to communicate that Hydaelyn's not a bad guy!"
Rejoinings: I don't know of any quote reframing them in a positive light, so if someone does please let me know.
Additionally, Venat, Hermes, and Emet all get lumped in together as essentially 'Ancients doing Ancient things'. Due to the ludicrous way it's all been handled, you may as well pick which side you most sympathize with or thought had a point. I refuse to accept this nonsense that genocide is okay if Person A or Person B does it, but somehow not if Person C does for arbitrary reasons.
As far as motivations are concerned, I did not find Hermes or Venat relatable. Regardless of what the writers' intent was, the Final Days appeared triggered by Hermes out of spite while the Sundering was Venat's crisis of faith. The rejoinings by comparison were 1) a group effort rather than a singular individual playing God and 2) sought the reversal of a crime against mankind.
There's still the issue of the shards being tied to the fate of the Source. Even if it's unlikely the game world would be destroyed, that's still a huge liability. Possibly even moreso because the shards exist in pocket dimensions where they're protected from threats the Source is not.
Nothing is truly separate, in fact, I've read theories that if the Source soul of a person dies so do their reflections on the shards. I don't know if that's true, but if it is that's obviously not an ideal situation. I don't think it can be ignored that while Hydaelyn forced everything apart it's still intrinsically linked. This idea that everything is its own island and can just be left alone now isn't how we're shown anything works.