I have sometimes seen rules that don't try to spell out every specific, because most civil conversations don't require knowing exactly where the line is between good behavior and bad, so you can get riiight up to it, then say in bad faith, "but I was obeying the rules!"

Rather, I consider vaguer rules like "don't be a jerk" to be a feature, and one can use context clues to see what the community considers jerkiness