Ever hear of anyone being fined piles of money or going to jail? Or for that matter, losing their license or having it suspended? Whereas have you ever witnessed an idiot waving as he sailed over your runway at the folks gathered there? I've lost count of those incidents. And yet FAR 91.119 is no less important than any others the FAA is supposed to enforce.
Actually I have, when I lived in Myrtle Beach there were a lot of issues with some of the banner tow operators. Some of them were cited for flying too low over boats and assemblies. Seems they did not want to be 1000 feet over or 2000 feet from the beach. Lots of residents complained about the banner tow planes flying too low over their houses as well, Seems they did not wait till they got to altitude before turning into land. Thing is that at first the FAA did nothing but argue with local authority about jurisdiction as the local police were charging them with disturbing the peace, reckless endangerment, etc. IMO the FAA and IRA need to go.