Living in the west of Ireland myself (Galway), I can tell you that is not true. I've never even heard of that improbably named gentleman who you claim is "one of Ireland's greatest humorous writers and a great student of the Irish language". (An unlikely name as in Irish, n never goes before c, also double-e would be an i "fada")
Maybe he markets himself to americans as such to part you from your hard-earned. Who knows.
A lot of Irish (and especially English, e.g. John Cleese, Sharon Osbourne etc) make a living in America by pandering to long held ethnic stereotypes that Americans fully believe in. This guy, assuming he is actually Irish, is just doing likewise. When you challenge the cherished and stereotypical view of the world that Americans hold dear, Americans get confused, resentful and angry.
Hope you've learned something today.