User blog comment:KillRoy231/However the show ends, what of Seasons 1-14?/@comment-108.36.76.116-20191208144258/@comment-1031724-20191208161528

Because Chuck was pulling the strings the entire time and can undo anything that happened. Reviving Lilith being one example. He can change the rules of the show and do pretty much anything except leave the world he's in.