Can only change the future. Never the past. The past has occurred. Rewriting the past changes the future. It's a conundrum. There is the present, it loops, replaying the past, or it splinters going forward into a new version of events, or it continues on its path. But the past has happened. Changing it, changes the future.

What are you even changing? A narrative. Yawn. It's there because the past has occurred. By changing it, what future do you forsee?

Hence the Mandela affect. A narrative that erases the past to dominate the present, causing its future to remain intact.

Ultimately it won. It can say what it likes about the past. Who are you to argue with it. You can only point out the irregularities of it inserting itself or its version of events. They will only lose like it did in that past. Or do win against it, and create a new narrative. In doing so you've replayed the past. What does it mean?