Phil d'Conch, the comment about Reba McIntyre exaggerating her NATIVE country twang was an attempt to show the Americans how annoying I find Brits singing in a US accent.
Again, I've heard Brits complaining that British folkies exaggerate their local accents for effect ( I've also heard that said about George Formby ) But that pales into insignificance compared with a Brit singing in an American accent.