I think this is a great point that needs to be discussed more. Entertainment of any sort probably isn’t inherently bad. Whether it’s comic books, television or video games, there’s always been a tendency to accuse leisure media of rotting our brains.
But the real danger is what leisure media is displacing. It’s not that we’re consuming media, it’s the amount of it that we’re consuming. Just like you shouldn’t try to live off Cheetos, reality television probably shouldn’t be the major contributor to your worldview. A little dumb media isn’t bad as an occasional indulgence. You just need to balance your media diet with something better for you.