Jim - ask what you owe - that is your decision.
I ask what I owe - that may be a different decision.
Who gave you the right or power to decide what someone else owes?

Take our own Tone Deaf Leopard for example: the bel canto brigade recoil in horror, but that is not the point of what they do. At their best they can be side-splittingly funny, at least one of their tunes to a well-known song adds well to the darkness of the events in the song, and others do perform their words to well-known songs.

If you apply "standards" as you seem to wish to do, you do indeed exclude them - as Sue has explained above.