Some (and most who play at a live no-miming events like Glastonbury) in pop ARE genuine musicians, Sinsull, but anyone who has ever tuned into one of those pop-chart type shows would know that others are clearly not - yet they may have made a quick fortune while other genuine musicians have struggled.
I'd rather Runrig perform their Scottish lyrics that you mention, IE, in a Scottish, rather than American, form, frankly. And, if both can sound good, why not chose the form from one's own neck-of-the-woods and, thereby, help keep our world nice and multicultural. This is nothing new, of course - many reading this will know as well or better than I the perform-your-own policies of 50s and 60s folk-clubs here.
And, to Volgadon, fair-trade of fruit, etc., is very much a part of the WAV way. So, on that one, she's apples, as they may still say in Aus.