For the last 5 years between all 5 munis (Kizer, Clay, Mo, Lions, and Hancock), I averaged around 3-4 walking rounds per week, half of those rounds as a 4 some with my buddies, the other half as a single getting paired with other people. Most of the idiocy I see are from newer players who started golf on their own. They didn't have established players who showed them how to play golf and the etiquette. They play with their other noob friends so it's the blind leading the blind. They don't understand pace of play, to fix the pitch marks on the greens, to walk/drive to their own balls and be ready to hit as the furthest out is hitting, etc.
So when I see bullshit like this, I attribute it to their being dipshits to golf. They probably quickly drove off in shame because someone pointed out their idiocy.
BTW, one of the biggest complaints with new golfers is their reluctance to yell FORE. I think they are embarrassed that they hit a bad shot which might kill someone. If they yell fore, it's usually a half hearted attempt. I usually remind them that it's golf and bad shots are guaranteed and that even pros loudly yell fore.
The other complaint is pace of play. When I ask them to hurry up, the usual response is "mind your own business". I tell them their slow play is everyone's business who is stuck behind them. I ask them if they've ever been stuck on a tee box with 2 or more groups/tee times on the tee box. When they say yes, I tell them it's because some group ahead is way behind on the pace of play. That there's probably at least a 1 hole gap between them and the group in front. That's usually when the light comes on.