It might be because they trapped in their driveways for a few hours when there is a match on. Because people park so badly. Maybe...
I don't think so. If somebody's driveway is blocked there is a tow away service available through the Gardaí and generally the amount of parking is nothing like Croke Park, Aviva etc.
I reckon it is just a case of "Why should I make life easier for somebody going to the match . . ." Coincidentally, that's the way we drive too, bursting red lights, occupying yellow boxes etc.
It's just the way the Irish Nation has become. Ireland of the 100,000 welcomes my rear-end.