I think it affects our opinions, whether we want them to or not. If I watch a movie (or a trilogy) I might think of a few things I would've done differently to make it better. Doesn't matter whether I enjoyed it overall, hated it, or anything in between. I tend to think of things that didn't work in my opinion, and how I would've fixed them.
If I later find out that the issues I had were actually brought up behind the scenes, or were deliberate choices, or were the result of poor guidance from the suits, or any number of things, I feel vindicated, sure, but mostly I somehow feel even worse about the movie (or trilogy) because it has these issues that I now know could have been avoided.
I don't know if that's how it works for most people, but that's how it works with me.