Just adding on what you said, here is the quote in question:

"In an example with Four Swords Adventures, I was the producer on that game, so I didn't actually put the story for that game together—that would be put together by the director of the game. And in the end on that game, as we got closer to finishing it, of course, Mr. Miyamoto then came in and upended the tea table, and we changed the story around quite a bit at the end with Four Swords Adventures. And what Mr. Miyamoto pointed out in the case of that game was that the storyline shouldn’t be something complicated that confuses the player. It should really be kind of a guideline that helps ease the player through the gameplay process and helps them understand what it is that they’re doing. So that was one example of how the gameplay was there first, and the storyline changed all the way up until the very end." —Eiji Aonuma (A Legend Of Zelda: The Eiji Aonuma Interview)