They did this with the movie 'Bird Box'>First they made a bunch of memes pretanding to be people who watched it, they flooded social media with them. Then everybody seeing the memes, decides to check out "what everyone is talking about" and they watch it.
They are using it to test propaganda and how to distribute it without being noticed.
TV shows seems simple enough, the same way they are 'only tracking your information to give you better ads' but we all know that it's for much more deviously specific purposes. If they can make you think everyone has seen Bird Box, can they make you think everyone has been vaccinated? Can they make you think that everyone likes Hilary and hates orange man? Can they make you think whatever they like as long as you don't pay close attention and start noticing?
For most people, the answer unfortunately seems to be yes.
The human mind has been studied extensively and they know how to hack the average person who has not built up defenses and intuition.