To answer a direct question: RD is ‘revisionist’ in how he views the GAA because he is hypocritical, first, in treating the GAA as a homogenous (Irish nationalist) entity and, second, in not applying similar criteria to support for English soccer. If the GAA is tarnished by historical elements of chauvinism and narrow gauge nationalism, by what mulltiple is Chelsea tarnished by the Headhunters element? And supporting soccer per se by its longstanding association with far right groups?
Of course, people just like soccer, same as I just like hurling. But RD’s ‘argument’ is devoid of any such nuance. It is no more than passive aggression in the key of twee,
Revisionism means never having to say you are sorry.