As an age-bound representative of the "youth of today", I can say that there is a fairly large contingency of youth audiences supporting smarter entertainment.
Obviously, no show/franchise/movie will ever have ONE demographic, the support of young age groups has proven itself significant.
Look at the success of Lost. Look at the immense successes of the Matrix and Pirates of the Caribbean films. Now, people will argue till the sun goes down about the quality of these examples, but you'd be hard pressed to convince anyone that these pieces of entertainment are extremely ambitious, and exponentially more complex, both in structure and thematic content, than any other popular entertainment.
People complain about movies (and TV) that lack story, and when they're given pieces of pop entertainment chocked full (spilling over into other medias, in some examples) of character, plot, and deep thematic content, they run away screaming.
You really aren't using the Matrix as an example of good story telling are you? The Matrix was a showcase for new effects - not that it was a bad thing but it in no way broke new ground as far as story goes. It was simply the Wizard of Oz, except Dorthey "Knows Kung Fu"
And Take Johnny Depp out of Pirates and you have Cutthroat Island - this is why Disney only hired him back for the 4th.
I'd like more examples of proof that the youth of today crave smart movies - because evidence points strongly in the opposite direction. I'll toss my hat in on music as well.
Show me todays Rocky, Close Encounters, Jaws, Back to the Future, Ghostbusters, French Connection, -- hell, show me something on quality of Neil Simon or Blake Edwards. Kids today play video games - and that's what movies are made to compete with - that and the remote control. The movies of 20 years ago are still getting sequels and reboots now - this is our bathwater you swim in.