Source: SciFiNow issue 139

He talks about the unexpected twists in The Last Jedi and the backlash for the prequels. Full quote...

Exactly, yeah. And I think you should take risks. You can’t please everybody. God knows, I thought they were way too critical of the prequels and a lot of it was because it wasn’t what they wanted. And people become very possessive of it. It’s their story so God forbid you do something that doesn’t fit the preconceived notion of what they want.

I thought they were just so cruel to Jake Lloyd who did a fine job but they were mad because they didn’t want to see Darth Vader being an adorable little child. And I thought that was one of the things that was important, that at that age he could have been a young Luke Skywalker!

But I thought that was one of the remarkable things about the prequels. That if you take the wrong path, this could happen to anyone… I will never forgive some of the cruelty that they inflicted on that poor child when he did exactly what George wanted him to do.