Any series with longevity will inevitably become a hotbed for debate, arguments and conjecture, and The Simpsons is no different. From fan theories to real-world predictions, Matt Groening's beloved series is a figurative goldmine regarding analysis and discussion. This type of back-and-forth is natural, considering the show is nearing its 35th season. One such debate, incidentally, often revolves around determining when The Simpsons left its "Golden Age" -- a period typically described as the sitcom's peak, especially in quality, story arcs, character development and humor. There's some disagreement on which episode ended The Simpsons' most significant era, but the consensus is that it more or less happened sometime after Season 7 or 8.
Source：https://www.cbr.com/parodying-the-simpsons-season-1/
