It's no secret that Lucas wanted his two trilogies to "rhyme." But there's not a whole lot of, um, rhyme or reason to the repetition. This guy's trying to come up with an explanation for it. But I think he's reading too much into it. Some, probably even most, of the parallels he draws are obviously intentional, but I don't think there was an overall design to them.

I highly doubt Lucas structured his saga as a ring trilogy, and, even if he did, it doesn't really make me appreciate the prequels that much more. The biggest issues with them still remain.

Thing is, a lot of people make fun of the "it's like poetry" quote, but I agree with Lucas, there is an interesting storytelling technique in repetition. I can't quite explain it, but I do believe having the trilogies rhyme was a fantastic idea. To show Anakin and Luke in similar situations and how they deal with them differently is an compelling way to connect their stories and reveal things about their characters.

Of course all of that means nothing when the movies aren't all that good.