George undoubtedly said that. However, the idea that there was ever a single master vision that was fiddled with around the edges is kinda his own mythmaking bullshittery, plus wishful/rueful thinking from fans. Any time he was interviewed, that man just proclaimed what whatever he'd been noodling on in the last week, influenced by whatever was going on in his personal life, was always the plan from day one.

Certain core elements seem to persist, but shit like "how many movies," or "who's the central core to the narrative" or "exactly WTF are Whills" can go in 180 degree directions depending on the era in which he is discussing them. The analogy I've made for George is that all of Star Wars was his American-Graffiti-style garage hot rod. He fixes it up and mods it and rolls it out to show off and race every once in a while, but fundamentally it's his. He can change whatever the hell he likes, and it's your problem if you got attached to the red paint job from 10 years ago. This is what I think people are instinctively getting at when they say George doesn't understand his own creation.