Consider that Peter likely advised the writting of Mark
If we consider that Peter likely advised the writing of Mark, then this concept is even more important.
Peter wouldn't have made up this rebuke. It would only be included if it was real.

NT211 Introducing the Gospels and Acts: Their Background, Nature, and Purpose
that Christ would be raised, and that repentance for the forgiveness of sins would be preached to all the world beginning from Jerusalem. It says, “You are witnesses of these things.” “Witnesses” is a