Back in the day, cavemen who drew on walls were unhappy.
In the grand old radio days, people who listened to Fibber McGee and Molly were unhappy.
Don't even get me started on people who go to the movies.
It just sounds like pop psychology to me. I know a lot of people who watch NO TV. I know people who don't work and do nothing but watch TV. I know people who like to be entertained after work. It's hardly an activity that needs inferences about such subjective issues as "happiness" drawn from it. Despite my dislike of (most) reality shows, I don't think the people who love them are inherently more unhappy than I am. In fact, a lot of folks i know who love them are decidedly more happy in general.
BTW, did anyone see How I Met Your Mother last night?