The Animal Crossing: New Horizons community is known for its high amount of fan content, likely related to the dedication the game demands for daily sessions. It also gives players plenty of freedom to create whatever they would like, something that has resulted in lots of interesting content.
Animal Crossing: New Horizons is primarily intended as a relaxing daily experience themed around living on a small island, but offers lots of creative freedom with its design mechanics. Many players leverage the creative mechanics of the game as an outlet to create content paying tribute to other media.
User elpinko posted a clip to Reddit showing a segment of the iconic "Steamed Hams" comedy sketch re-created using only Animal Crossing: New Horizons, specifically the "Aurora Borealis" sequence. The iconic scene makes clever use of what appears to be a hat on a stand as a stand-in for a burger, maintaining accuracy to the scene. It also includes a custom picture in the background of Seymour and pays special attention to making the scene appear similarly to how its depiction in the original version.
In a comment, elpinko indicates the scene is actually part of a larger project parodying the Interdimensional Cable segment from Rick and Morty. The full video (also made in Animal Crossing: New Horizons) provides the context of the characters Rick Sanchez and Morty Smith viewing television programs from other dimensions. The full version also includes a parody of the American talk show Conan, as well as another re-creation, this time of the "Numa Numa Guy" meme that was viral in the 2000s. Given Rick and Morty's frequent use of parody, the context makes perfect sense for such crossovers.
The Simpsons is a franchise inextricably linked with gaming, with the series expanded far beyond its television roots. The iconic characters have appeared in crossovers with other shows, on countless forms of merchandise and even in several licensed Simpsons video games, some of which are looked upon quite fondly by fans. Video game crossovers, however, are significantly more uncommon for the series, so fans making their own is understandable.
Even with fans' general agreement that the core show's quality is in decline, many fans enjoy looking back on earlier episodes and finding the good in the current Simpsons seasons. The Simpsons has run for 33 seasons, and over its airtime has grown a considerable following, so it makes sense that parts of the show's fanbase would intersect with seemingly unrelated media; that intersection grows even more likely when the massive success of Animal Crossing: New Horizons is taken into account.
Animal Crossing: New Horizons is available now exclusively for the Nintendo Switch.