You say "canned laughter" as an absolute fact while not acknowledging the "audience" announcement. But then you can't tell the difference between film and tape. Sure they can manipulate the laughter. It's almost necessary to edit it down to the required length. Even "The Dick Van Dyke Show"...
It is announced at the start of every episode by one of the cast members that it is taped in front of an audience. Missed that part?
Even if true, though, it's a silly reason not to watch something along with others such as 'It's not R-rated', 'Don't want to see commercials,' etc. Seems like...