
For he perceived that it was out of envy that the chief priests had delivered him up. But the chief priests stirred up the crowd to have him release for them Barabbas instead. And Pilate again said to them, “Then what shall I do with the man whom you call the King of the Jews?” And they cried out again, “Crucify him.” And Pilate said to them, “Why, what evil has he done?” But they shouted all the more, “Crucify him.” So Pilate, wishing to satisfy the crowd… —Mark 15:10-15
You’re making things up based on false assumptions. The Gospel of Mark is the earliest source we have. There are no major changes in the narrative in Matthew, Luke, and John’s accounts, just extra details. All the Gospels make it clear that Pilate made the statements about Jesus’ innocence to the crowds. People were there to witness it, and Mark begins the motif of name dropping witnesses that were present.