I got an A1 and would have been confident of getting and A in the old style 80s papers, but was definitely of the opinion when I did it that the paper was becoming far less testing.
I think he objects to your wording because the UK is Great Britain and Northern Ireland, when you don't appear to mean to include NI (or the occupied territories as he calls them). I would hazard a guess that he doesn't recognise the legitimacy of the United Kingdom and that such recognition equates with a lack of patriotism ...
I'm curious if polthegael uses such terms as the 'Free State' and the 'Occupied Territories' in ordinary discussion in England.
Taim ag deanamh mo dhicheal an thread seo a shabhail!