@jaalmo: the idea of a copyright is pretty off base because people who appropriate the work of another culture almost never have to give back the money they make off of their appropriation. For example, Elvis made his money by singing blues songs that were largely written by African Americans who were largely shunned by white audiences. He was talented, but what differentiated him was his ability to sell black music to a white audience. Of course he there was no culture police force that took his money or fame when rock historians figured out the full context of his work. It's just a sad story about how the people who created the music that Elvis sang didn't fully benefit from their work.
There's no enforcement on behaving rudely or selfishly outside of being called a jerk. So I really can't get upset about people trying to be more thoughtful about where the things they like originate. And I fully support the benefits of creating something cool going to the person or people who actually created it.