Interesting.
I've never thought about The Who as being a lyric driven act. If you listen to something like Won't Get Fooled Again or The Seeker to me it's all about the powerful music.
On the plus side, these collaborations brought to mind the fact that while MK may have led a low-key, "boring" life, he's managed to avoid the controversies that some of the collaborators on this project haven't (Townshend, Page, Clapton).