Television shows are smarter than they've ever been before. The Sopranos, The Wire, Enlightened, Girls, Justified, The Shield etc. These shows couldn't have existed in the 70s or the 80s because networks needed to cater to such large audiences. Now that we have more options we can have smarter shows.
There's a lot of smarter television out there, but it's all over the place. You have to actively search for it rather than it show up on your favorite prime time network station.