I think blatant, continuous discourtesy is an affront to the spirit of the place, whether it is coming from a kookaburra or a curmudgeonly limey or a Georgia cracker; it is the continuous use of rudeness that sours the air and makes exploration less a delight than it once was when humor was used more liberally than rancour. I don't care whose rancour, when it is over-used it becomes an abuse of privilege and a discourtesy to those who care about tradsitional music.