Good point El Greko. I know and love those songs too. They are easier to perform though, because they make the perpetrators look absurd - and that is one of the reasons that the songs are so very funny. I liked the song you quoted and I very much enjoyed reading the lyrics of Steve Earle's "John Walker Blues". That is very much the sort of song I want to hear more of.
It is good to see this thread throwing light rather than heat onto the subject. Thanks to everyone, who has written in so far.