That's the idea introduced to us in Beyond Light. In past timelines that Elsie Bray experienced, we were corrupted by Darkness and the Traveler left Humanity. She has gone through countless iterations trying to find the right path forward, and it led to us destroying the Black Heart in Destiny 1, because the Black Heart was responsible for the corruption of Guardians, including the player Guardian, in previous timelines. What is still a mystery is what caused Elsie Bray to experience her time loops. The fact that we are entering the Fate Saga, and they discussed the extradimensional nature of the Nine and how that allows them to interact with reality in a very different way in the Reveal Event, including powers over time, implies the Nine could be responsible for Elsie Bray's situation, creating the time-loop to preserve life in Sol until they find a timeline where the Sol System is preserved and we defeat the Witness.