Far as I'm concerned it's about something a whole lot bigger. It's about the importance of originality, breaking new ground, keeping a cartoon interesting for 22 years.
Which unfortunatly its failed to do for the last 10 years. Simpsons used to be brilliant, but since the turn of the century its really failed to better itself and the writing has dipped massively. I still watch the first 5 season and love it to bits, but the current ones are incredibally unfunny.
Whereas at least Family Guy has that negative attitude with brilliant sarcasm that we Brits love. I guess Family Guy has a rather dry sense of humour, I didn't enjoy it when it first came out, but 3 years ago I made the effort to rewatch season 1 and loved it.