Said it before but this time with no offense to dear sweet Bailee Madison but: That whole narration was so Disney Jr. in tone on the DVD was hard to take it seriously. I’m excited to see the backstory here as well, and I agree that he’s saying Killian Jones as before that moment he lost his hand and swore vengeance. I think there might be a progression to how he took to using the name Hook that happens in NL. Sort of like Regina wasn’t always The Evil Queen but we saw it was a progression of sorts from horrified about a dream strangling Snow to dreaming of horrible things to do to Snow. Rumple started her off, but she did make her choices. So perhaps PP sort of played with Hook in the same way, but to what end? Rumple did it to find Bae, but PP was looking for Henry, and Hook’s path was not very direct in terms of that so it couldn’t be something to do with that.
“If I had a world of my own, everything would be nonsense. Nothing would be what it is, because everything would be what it isn't. And contrary wise, what is, it wouldn't be. And what it wouldn't be, it would. You see?” -- Lewis Carroll, Alice's Adventures in Wonderland & Through the Looking-Glass