I honestly really like that approach, plenty of other lyricists do something similar. Damo Sazuki, Mark E. Smith, Kurt Cobain, Beck and Thom Yorke all come to mind.

I didn't know that all those guys did something similar; the only singer there that I'm properly familiar with is Damo Sazuki, whose style I really like. I've listened to a fair amount of Can and almost never have a clue what he's singing: what language, or if he is using words at all.