I never suggested that the leagues stop tracking the scores. Just that they stop making the info available online for the parents to see. That’s an easy change to implement and could have some positive affects. There’s no reason I can think of that the results of every game need to be known online by anyone that wants to see. Again it’s the adults that are looking at the results, not the kids. Then we tell them whether the team they are playing are good or not.
The promotion/relegation (along with the tournament trophies) is what the coaches are chasing (and what's distorting the focus on development). So the only thing your proposal would do is just hide the info from the parents (which would have the unintended consequence of making the bracket a team is in even more important to the parents). And so long as there's an "official" score to report for a match, some enterprising fellow will find a way to get it out to the parents (since there's a market for the information being hidden from them, but which would still be available to the coaches/DOC since you'd need transparency for purposes of promoting/relegating [none of them will accept CalSouth arbitrarily telling them they got promoted/relegated without an explanation as to where they stood] and setting up scrimmages)