I don’t think the popularity of this has anything to do with the particulars of the plot, but rather it is due to the relative scarcity of decently implemented dystopian movies, for which there is always a deep hunger. The author of this article is trying too hard to draw deep conclusions from the success of this movie, when the real reasons for its success are much simpler.
I thought the author was pointing towards simple - and timeless - reasons for the success.