I attribute the loss of novelty content on the radio to the rise of the public Internet and social media. There's simply no need to write and publish novelty or comedy content for radio when chances are, depending on one's sense of humor, you can find something you might consider funny on TikTok, Youtube, or hundreds of other sources. Since the 90's one can find any level of cute, quirky, nerdy, sick, profane, or completely socially unacceptable forms of comedy, all for free with the click of your mouse.