I'm not sure these comparisons work. Scotch Tape was a trade name and had nothing to do with Scotland excepting, I'm led to believe, the crude stereotype that you didn't need much of it. French fries got their name because they are very common in French speaking Belgium and north-east France; a Chinese restraunt sells Chinese food; a wiener or sausage dog is called that because it is shaped like a sausage; and the German Shepherd was a breed originally from Germany or at least Alsace which is part German. I can see why someone would call something an Irish song if it comes from Ireland or the Irish diaspora, or even if it is about Ireland. Maybe even if it is an old ballad that may only possibly have come from Ireland. But there is no excuse for calling aomething an Irish song if we know where it came from and pretty often even who wrote it. It surely takes something away from real Irish songs (ie the real tradition)if every song that gets sung at some point in a bar somewhere in Ireland, or gets recorded by some Irish singer, then gets called an Irish song?

They are not the only ones that do it of course. Just the worst. I have heard Scots say that Amazing Grace is definitely a Scottish tune. Just because a pipe band recorded it in the 70s.