Had the opposing team captain ask me about this in our match earlier this week. She asked if you were "required" to elevate your cue when the cue ball was within a chalk cube's distance from an object ball. She told me our LO passed that on during the previous week's match with them. I wasn't there, so I don't know what actually happened or was said, but it just goes to show how much misunderstanding and misinformation there is about this.
For my team, I really don't follow up on these calls when we have 2s and 3s playing. I've never had one of the people actually playing the match ask about it on those levels. Those games often go to double digit innings, and take almost an hour. I've explained the rule and suggested the usual Dr. Dave videos, but it still happens. One time I even tried to coach a 4 to help avoid a double hit, and he didn't get a ball to a rail after contact, so in his mind, he was going to shoot his way and not give ball-in-hand.
This has bit us in Tri-Cups though, and there's no way around it there. I agree that the best way to have it sink in is to be on the wrong side of that call, but that pre-supposes that the player wants to improve and that league is more than just a social activity. You can say the same about golf, bowling, bocce, whatever. Some people are just participants, not competitors.
And the APAs model of limiting skilled players on a team seems to work pretty well for them. We don't have many options locally, and as players improve, they push their teams apart, most often to additional teams in the league. More teams = more players, and more players = more money, which is really the reason for the people running it to do it.