Can you expand on the slavery analogy? I'm aware that this is the naive perspective, but when I realized I was watching more TV than I liked, I stopped, and there was no overseer to whip, mutilate, or starve me into resuming.

That isn't to say that it's trivial: I had to identify why I was doing it (I don't even like watching TV!), and then work on myself so that I had the mental energy to replace it with activities I find rewarding, like reading in the park or playing music.

But this sounds more like "making your leisure time fulfilling is a life skill and a mental health challenge", not "leisure time doesn't exist because we're forced to use it on certain things".