There is cultural value in entertainment. And as modern people we have a need for meaningful forms of entertainment that help us process and make sense of the world. But it's still not "knowledge". Knowledge needs to be free because there is no set way to use it; but Curb Your Enthusiasm is just a thing to watch for entertainment. If you are a legit Curb scholar then you have a copyright exemption, even.

You can object to the ludicrous avarice of studios and networks while still saying that creative work is real work, and that even if we personally can't afford or don't want to pay for it, that society as a whole should reward creativity.