There have always been excellent, good, fair, bad, and horrible shows on the air. There really does not seem that any era has any quality cornered, nor does any quality have any era cornered.
The thing that has always been most problematic is the heard mentality. Everybody is always jumping on the bandwagon, so you will have some seasons that clump a lot of similar shows together, but this has always been the case.
I am becoming seriously tired of reality shows, I am even getting sick of having to wade through them on the guide just to get to listings of proper programming.