I see your point, but I wasn't aware there were any rules about what a group is allowed to call themselves. Would you have expected Queen to be an old woman wearing a crown, and then been shocked to see Freddie Mercury prancing about on stage? :-)

IMO it's up to the individual to check out the artist before booking a ticket for a concert or going along to see a gig.

Having said that, I do remember being disappointed when I went to see Barenaked Ladies... :-)