Admiral Buzzkill wrote:
...modern audiences have neither the attention span or the IQ required to address a deep plot..
I think you're going to need to post some evidence that the folks who comprise "modern audiences" have more limited IQs than you do before any of this can be taken seriously.
BTW, Star Trek The Motion Picture
does not feature a "deep and sophisticated" plot.
1979 featured films like Norma Rae, Apocalypse Now, Kramer vs Kramer, and All That Jazz. 2012, Life of Pi, Lincoln, Les Miserables, and Argo. It doesn't sound like audiences are any less sophisticated today than in 1979 going by the movies preferred. They have enjoyed the latest JJ Trek films far more than the ones prior to his work though if box office receipts are any indication.