Where exactly is there cognitive dissonance in demanding more from a medium than sheer fun? Seriously, don't just throw a term around because someone else used it if you don't have a greater purpose than a non-sensical comparison.
I don't disagree with your claim that there is "space in the medium [for] the full spectrum of entertainment," though I'd note that entertainment probably can't be summed up by a spectrum model in the first place, especially one so narrow as the one you provided. What I'm critical of, however, is the way in which this industry and its reviewers are skewed towards certain forms of entertainment, while others are left emaciated or simply unexplored. Why is it that the cinematic experiences (to use merely a pertinent example) emulated by video games like Uncharted are those of mainstream, blockbuster action films? Why (to take it back to Parkin's comparison) settle for The Temple of Doom, when we could demand The Temple of Doom and The Seventh Seal? It needn't be an either/or issue, and I never said it should be. I simply refuse to be complacent about what this medium and this industry can do.