Also I’d like you to point out where exactly he keeps contradicting himself by saying the rough cut is bad. He does have a central point: that the rough cut is not as bad as the video makes it out to be and the editors aren’t the only reason the movie is good.
The only reason you think he’s contradicting himself is because he’s saying that the changes the editors made really weren’t all that big and it works either way. He thinks that both the way the rough cut and the final cut did it is fine. I don’t recall him saying “Thank god the director removed the Luke scenes”.
The whole “rough cuts are usually bad” tangent was saying that even if the rough cut was truly awful, that wouldn’t be unusual.