So his parodies are suddenly stuff because the subject is stuff?
That's like saying...
No I mean, I don't even need to make up an brown townogy for this. This is comedy by definition. Making fun of something that people like or know about or is popular because that way people would get it.
Alright, for stuffs and giggles, here's an example any way. That's like saying that Frank Caliendo (or pretty much anyone who does impression comedy) is a stupid forget because he's imitating George Bush who is a stupid forget. It doesn't work like that.
I'm sorry that the top 40 songs of today are all stuff and you don't like them, I don't like them either. But the fact of the matter is, all of his (Weird Al's) famous songs are parodies of songs that at their time were top 40 hits. He parodies music people know.
Look, I've thought modern music has been stuff since the day I started listening to the radio. Dunno why, tastes I guess. I like stuff that my parents liked. Hell I like stuff my grandparents liked. The fact is though, a parody can make the song that much funnier. Even just covering it in a polka medley, which is genius funny because polka is the least known and least popular form of music, so having him play all of these "number ones" on an accordion is great.
Long story short, if you're some kind of hipster who thinks Weird Al should only parody songs of some obscure band that's only had 300 hits on Myspace, good luck with that; the fact is no one would listen to him because no one would get the joke. I think all music past the year 1990 is pure and simple donkey dung with a few exceptions, but you didn't see me getting all butthurt when he parodied... well... pretty much everything after said date.