Except we later learn from Argos that we're in a causal loop, so even if we don't have a "script" so to speak one is still in play and the outcome of events on Elpis have already been determined as far as our ability to perceive time goes. There could be other timelines but our objective was not to create new timelines or try to save the World Unsundered; it was to learn about what set the Final Days in motion and why, and in so doing figure out a way to stop the apocalypse on Etheriys as we know it. We found what we were looking for and entrusted the past to Venat, who in some tessellation(s) of time's infinite pathways was able to change things in ways we can only speculate... but our Venat was not.