There's more of everything now, and it's all more accessible, so naturally there's more crappy art. There's more good art as well, if people stop whining about what their television places in front of them and go find it.
It's always been the case that if you just allow the media to spoonfeed you your entertainment, you'll end up with the blandest most universally inoffensive nonsense available. Mainstream media is about pleasing as many people as possible with the same product. For every Pink Floyd, there's ten Bay City Rollers.