I mean, yes, Hollywood writing for ongoing series is often repetitive. You literally have a "procedural" genre where they go through the same basic structure with almost every episode. Some sitcoms are quite bad. Some are pretty funny (and don't involve laugh tracks). There's a pretty big difference between your average multi-camera sitcom and single camera sitcom. But at the end of the day there's just good shows and bad shows and those don't always correlate with popularity.