"why someone should turn their back on their own tradition to adopt something very different and then cling to that: no, there's a wrongness there."

Can you elaborate on why you find this wrong? I'm very curious about this discussion.

Here in the United States, there are many traditions that are either adopted from other cultures or blending from a variety.   I look at something as say a Christmas Tree as an example of how one culture will adopt a tradition from another. Is it wrong? I don't think so.

As for music, not everyone who comes from the south will enjoy Old-time music. Not every African-American will enjoy the blues. Is it wrong for a white kid from Boston to start playing southern tunes on the banjo, or a woman from Canada to play the blues? I think it points to the beauty of the tradition.