The main point was more about how somebody who doesn't watch TV will always let you know that they don't. Not really the reasons why. I think in that case, the satire is still relevant. Plenty of people on reddit/HN/the Internet almost bragging about how they don't use a traditional TV setup.
Basically like the old joke "How can you tell if someone is an atheist? Don't worry, he'll tell you."
Maybe you hear that so often because it's a trend, so the idea of it being the focus of your media center box for the next decade might be a little antiquated.
Or it's a vocal minority of people who don't miss opportunities to talk about it. I don't care either way, especially since the article was posted as a little joke.
Basically like the old joke "How can you tell if someone is an atheist? Don't worry, he'll tell you."