I agree, I mean heck... get this: The Simpsons was a huge help for me in learning English back in the day
But I haven't even bothered to check on it in years now. It's an excellent comedy, but I think like most things that go on too long it's just being milked. I always said and will say that a key part of making a good thing is knowing when to end; I'm afraid The Simpsons is definitely falling into the category of things that overdid it.
I personally think the movie should give it a good end - finish it on a high note and off with it!