Ireland may not be part of the British Kingdom (it never was, but it was "joined at the hip" in a way for some time), but it is part of the British Isles and always has been.  It is a British Republic, the same as if Scotland, England or Wales or Northern Ireland declared themselves republics and separated from the Union, perhaps even joining in with the government of Dublin.  Nobody disputes that Ireland isn't any longer in the Union, even though Northern Ireland is, unless of course, the person who is making allegations like this is an island expansionist to declare republicanism throughout the island of Erin.  This is the only motivation for making any of these claims.  Tendentious editing is against Wikipedia's rules.  I know my own motives are questioned when writing it this way, but I am not opposed to the idea of the British Isles being ruled from Dublin, or "Celtic" people being monarchs of all the islands, instead of Germans.  I simply have no political motivation here and that sets me apart.