Ha ha! Yeah, these threads are useful for identifying narcissists. They scroll along to see subjects like "Swift", the "Super Bowl", or "SNL", then feel compelled to open the thread and be sure to take the time and effort to bore the rest of us about how they "could not care less about" or "haven't watched and never will" or the cliched "hasn't been funny since the Belushi years".
No. 70%-80% of posters attack somebody. Posting that you don’t care about Taylor Swift or that SNL isn’t funny is just conforming to the general pattern and accepted practices and isn’t any more narcissistic than posting that you love Taylor Swift or that SNL is a laff riot.