There were definitely people who modeled their behavior or at least excused their actions based on Seinfeld. My aunt for instance.
There’s a long, long history of idiots missing the point of various pieces of fiction. The Prince, Fight Club and the original MS Gundam come to mind. Yoshikazu Yasuhiko even felt the need create Gundam: The Origin because too many kids thought Gundam’s message was “War is cool”.