The fact that the differentiation between amateur, semi-pro and pro is neither neat nor tidy is irrelevant. As I said, it marginalises the independently wealthy and and stigmatises the poor. But more than that, it bears no relevance what so ever to the quality of the art. It's a complete red herring.

What is of more interest is whether the artist/performer comes from a tradition or a fashion clique. And what's the difference?