The problem isn't that a bunch of locals can't play a cordial game of pool. The problem is they go to another bar and try to force those rules on others and then arguments ensue. Thats because they were never taught the correct rules. And sure as hell don't respect the game.
The game wasn't invented by a bunch of bar flies (no offense to bar flies, I am one) and golf wasn't invented by putt-putter. I don't play golf by the official rules, but I at least try to learn them the best I can and respect from where they came.
Don't go into a chefs kitchen and tell him how to cook. Thats my opinion.
Nobody who regularly plays in that bar would "force" those rules on others. They're not savages, they're pool players. And like I said, here we don't argue about rules. They're mostly the same everywhere. Minor differences can be settled before the game. Maybe where you're from there used to be trouble with the bar pool crowd. That would explain your prejudice that all bar players are drunks who start fights every now and then. Yes, an idiot can show up in a bar here as well, but it has nothing to do with pool. Pool by itself doesn't attract problematic crowd, quite the contrary.
Hahahaha....I have a sneaky suspicion that these rules are totally made up BS, proffered here to arouse a silly debate.
On the slim chance that they are not, all I can say is that if I owned a bar with a coin-op pool table and ever caught someone playing by these rules on a busy night, I would 86 that person. No more pool for you.
If two players both settled to play by those (or any other) rules, why ban them from playing? They're not forcing anyone to play that way, and they'd most likely order some drinks while playing in your hypothetical bar.