Earlier quoted context omitted.
I suspect regular programming isn't getting dumber, the alternatives are just getting smarter. When I look at the crap I watched as a kid in the 80s (which included a good amount of 70s reruns), basically all broadcast TV today is far superior. But the competition for broadcast TV isn't "no competition" now, it's the Internet, and computer games, and Netflix. The entertainment industry has been blown wide open by the…
One thing that is certain is that there are more commercials now. If you watch an episode of The Big Bang Theory sans commercials, you will notice that it is only 17 minutes long! And that includes the 60 second intro. So 13 minutes of commercials for 16 minutes of actual content. No chance I'll be going back to regular TV.
Actually, I can test this...I've got some old My Little Pony episodes lying around on a hard disk. They're 9 minutes apiece. IIRC they ran 2 to a timeslot, so that's 18 minutes of show per 30 minute timeslot, and 12 minutes of commercials.