Earlier quoted context omitted.
It's odd that it reminds you of that. Is me mentioning this once on my blog your measure of 'constantly'?
People who don't watch TV do tend to mention it at every opportunity. But they likely watch youtube vids, interviews, webcasts etc. So it's like someone constantly going on about how they haven't even owned a car for 5 years! And forgetting to mention they have a 4x4 pickup truck now.
Most of those opportunities are probably situations when the topic of conversation has already turned to television and they are politely excusing their lack of participation.
In my experience, the topic rarely comes up. My guess is most people who would care are off watching TV rather than socializing.