I think I figured out why our views or interpretations differ? In my opinion and I can't speak for Geezer, I am looking at the article in isolation, objectively whereas you, I think are reading the article - I wouldn't say with more knowledge - as the article directly relates to the question Geezer poses and can therefore be answered by anyone. But I suppose you came to the article with more subjectively? (Maybe the wrong word I don't know) Why?
You say that you would have been impressed had the game been played in Ulster and it was relatively peaceful at the time. I cannot answer that as a) I was a baby at the time (although you may in this respect simply know more about history here than I do) b) I am not really interested in football and c) sorry to say but the IRA stuff kind of passed me by. It was always in the news, Sinn Fein, Gerry Adams and that but I have never been to Ireland or know anyone Irish so its easy to turn the page or switch the tv over - as awful as that sounds. And I don't live in London.
Final point I do believe unless the facts of the article are wrong that you stand corrected as the 5th para states - 'In the 1972 championship Ireland had beaten France and England, both away, in their opening matches. With Scotland and Wales to come to Landsdowne Rd......' I suppose you could research it and correct the article, maybe it means that Ireland then came to Landsdowne to play the winner? I don't know how football works I only watch the World Cup and European Cup for the best looking guys. Sorry but their tans are nice.