This has nothing to do with Geo-politics or nation states, we all get along fine thank you, and will continue to do so.
The real point of this is that players, from the 4 nations comprising The United Kingdom of Great Britain and Northern Ireland, have expressed a desire to have the flag that the real pro's from their respective countries use in tournaments.
After three hundred years peaceful union, we don't need advice on neighbourlieness from mainland Europe thanks all the same.