GAA referees don’t score highly in spotting fouls

Players are routinely pushed/shoved, etc, over the side lines and line balls are awarded to offending players.
The referee might not have been well-positioned to judge last Sunday’s game, but for most line-ball calls the linesmen are standing beside the incident and, unlike the umpires, can make a decision without having to consult the referee. Small things often end up as big things when a game ends all square or is won by one point.