I don't have any beef with the song (other than its implication that non-RC, non-IRA-supporters, are less authentically-Irish than RC, IRA supporters – how do the Irish feel about this?). However, it is the sort of thing that would have better remained as a musicians' in-joke. Like the private humour of medics, social workers, undertakers, and second-storey men, that of musicians and other show biz types is not always fully understood by the general public. This song should be taken as an expression of the frustration that many folkie/Irish-type musicians have felt and no doubt are still feeling at being required to perform the same handful of songs endlessly, night after night, year after year – or at being unable to get a well-paying gig because of their refusal to do so, and seeing lesser musicians get those gigs. There is no reason to expect the general public to relate to that frustration; the general public, inasmuch as they sit down in an "Irish" pub from time to time, apparently want to hear and sing along with that handful of songs. Having those songs, their singers, and the places where they are sung, mocked, is of course going to bewilder and even hurt those who are not part of the in-crowd. Eric should have saved this one for the after-party.