The Reasoning behind The Sundering? (*6.0 Endwalker Spoilers*)

[Veloran]

Well, let me stop you right there. First off, we're not talking about our universe. We're talking about a work of fiction.

I think that was the royal "we". As in, the "we" of those in-universe. I agree that the notion of predestination undermines many of the themes presented throughout the game, and that setup has about as many issues and implications for the story as we've seen as that of a multiverse/many-worlds interpretation of time.

If we ever have an expansion where we fight the Time Devourer within the Tesseract/Darkness Beyond Time, where discarded timelines settle like detritus on the ocean floor,

Honestly given the sheer abuse of time travel within the narrative that probably should be the next saga.