Everything in that movie is a joke. But the jokes in the movie were good.
Even though I liked the article it didn't mean I didn't like the movie. I think Interstellar is a better movie than most films because at least they tried to incorporate some true science into it (as opposed to 100% wrong movies like armageddon, sunshine, etc). So Nolan, Kipp, et al definitely do get the credit for that!
It's not real science because what I saw was a person going into blackhole and still being alive. This movie is not even 30% of what Inception was.
That scene was obviously not trying to be rigidly scientific. Either he died and what followed was his death dream, or the hyper advanced civilization that can control gravity manipulated the black hole so he could survive. Technology looks like magic to the unknowing.