The Progenitors exist in all timelines and multiverses, as they existed at the very origins of galactic creation, at the point in time where all corporeal perceived multiverses and temporal convergences began… including those of the Disco verse and other Nu-Trek spinoffs, such as JJ-Trek.
In the far future. No matter how the universe unfolds in each particular multiverse, the messages of the Progenitors would still be pure and true wherever they were to be projected.
However, should the universe begin to uncontrollably descend into chaos, disorder and self destruction, the Preservers would be dispatched with their Ark ships to help record, archive and preserve life throughout the galaxy.![]()
Star Trek Discovery in its entirety takes place in the Prime Timeline (AKA the same universe as all 11 other Star Trek Television series), and no amount of arbitrarily declaring otherwise is going to change that fact.