I don't think many middle-aged people complaining about 'music these days' are really talking about adult content, so much as lousy quality.

Cut the Simpsons; Mr. Burns is a non-example as the absurdity of his age is pretty much a constant. Disco Stu similarly runs on Rule of Funny.

• Even if The Simpsons stays on the air for another 50 years, Mr. Burns will never be too young to have experienced the crash of 1929.
  • Mister Burns has been pictured "terrorizing children in this 1850's woodcut", so it's no problem. He's functionally immortal, anyway.
  • Considering that Disco "died" circa 1980, Disco Stu must actually now be a Disco revivalist rather than a literal Disco Dan from The Seventies (assuming he's approximately the same age as Homer).