Your long, rambling dissertation was nothing but a long rambling distortion. Globally, music is music. Is a band in New Zealand who have never been to Ireland playing Irish music cultural misappropriation? Is a black band in South Africa playing country and western misappropriation? Music flows around the world. Music is for everybody. Keith Richards is a reasonably good guitar player and I bet your bottom dollar he knows little about the origins of US black music. He and Mick liked the music from day one and played it in their style. They are not deep thinkers. Give them a break.