Michael Moynihan: Soundbytes from the (GAA) campaign trail

The groans can still be heard, from coast to coast, in hamlet and city alike, the plain people of Ireland asking for it to stop.
Why did the late Seamus Brennan ever use the term ‘senior hurling’ about Irish politics, thus licensing generations of commentators and politicians alike to throw out the term whenever... what, exactly? Whenever the context that gave rise to the original saying doesn’t apply?