I Am Weasel was a show that was popular when it aired and was considered better than Cow & Chicken (hence why it even got a spinoff in the first place), but these days, its considered one of THE worst Cartoon Network shows ever and is hated on the internet, particularly /co/ who calls it "meh" or "terrible". It got the point where it lost to MGPAM in a CN poll, and we call agree that show is much, much worse.
The funny thing is nobody ever explains why its a bad show. At its core, its about Weasel and Baboon having different jobs/roles in every episode, ranging from vikings, gladiators, cavemen, vampires, worker bees etc.. Structured similiar to Golden Age cartoons. The overall setup is too simple to be bad and it offers enough variety, clever gags and interesting set pieces to be a fun watch. Nobody ever considers Droopy and Dripple or Timon and Pumbaa bad cartoons for following a similiar formula. Hell, Tingblad Bravo followed this formula, and many consider it better than the Partible seasons.
Also Michael Dorn as Weasel is fantastic casting, that guy has a great voice.
https://www.youtube.com/watch?v=ay1QhvLdQPU