That can’t happen if Control returns and forces the team to make another time jump, which they probably don’t want to do.
Fingers crossed I’m wrong, and this villain is officially gone for good.
This wouldn’t be an ideal situation for the future though, as the Discovery crew may have the one thing in its possession that can re-correct the world of the future.
Perhaps the sphere’s data can give the future more insight on what caused The Great Burn, or even help them re-learn knowledge that has since been long forgotten.