I never suggested that identifying a performer as an amateur, semi-pro or pro is a slur. I said it is a distracting irrelevance. It conjures up such irrelevancies as "Ooh, yes, very good for an amateur, but they'll never cut it as a pro." Or "Quite nice down the pub, but I'd never pay to see them". Or "I saw them busking in the town centre the other day, it was a bit sad." Or, "Yeah, they could afford to take a year off just to practice ... and that violin that daddy bought them didn't do any harm either."

So what that some fiddle player drives a bus. It's irrelevant.