But rarely is there a code hiding just below the surface. Unfortunately, that didn't stop me from incessantly searching for them, even to the detriment of my education. My advisor finally said plainly in class, "there's no hidden meaning - save your energy."
I read the article and I think what the author is saying is that Pixar is trying to condition us to deal with non-human intelligence, whether that's man-made (AI) or extraterrestrial.
Another way to look at it is that Pixar knows stories of redemption are compelling. They use that arc as artfully as they use color or big eyes on their characters.
I'm not sure how much influence he has had overall, but Brad Bird (The Incredibles, Ratatouille and pre-Pixar, The Iron Giant) uses redemption as the central theme in most of his work.
This article, however, reminds me of english class, where teachers insisted every little piece has hidden meaning. What if they just set out to make a good movie? Did the writer really intend for this hidden meaning or are you reading too far between the lines?