I think you are adding more to what I said, which I think is a humorous habit of yours to create an argument where there should be an agreement.Again the age is critical. That's why many national leagues have an integrated curriculum for their academies. Besides, at the U13 ages, the cognitive development isn't there for most players to make complicated risk/reward calculations...nor do they have the skill yet to send a lobbed ball on target. These calculations don't really get introduced into goalkeepers until around the age of 13 (my son took a tackett class on this when he was 12 and he couldn't understand most of it...his fellow 12 year old boys were asleep at the tables and Jeff discouraged them from going much younger)...by the look of the slovenly backpasses at the boys non-academy MLS Next and EA levels, most won't get it until around age 17, and the coaches that breakdown film this way are very few and far between (out of the GK coaches I know I think Jeff is the only one that does it, and for an extra charge and that's just 1 game a pop....team coaches outside the MLS Next level, somewhat rare). It's not "brain washing" (you always do s like this): it's teaching the kids the technical and tactical strategy they need to use a possession game, to build up their brain speed so they can make more complicated choices later on, and to not give them an easy exit or allow them to give into panic, because at that age if presented with responsibility or no responsibility they'll always pick no responsibility.
BTB, one of my kids recent teams was a fairly high latino club. His GK coach came out to see why my kid was always taking so many shots on the 1v1. He looked at the team playing and noted the defenders were afraid of the ball. They didn't want the responsibility for making a mistake, were terrified of receiving it, and when they got it they panicked and sent it up into a bad situation to get rid of it or messed up the short because they panicked, leading to the 1v1. Shouldn't have happened at a middle age school teams...at the youngers if you give them an out they'll always take the easier way, at least the boys will.
Neither the MLS nor the European academies stick to the strict possession when they get older. The MLS Academies have something called the US possession style which looks for those opportunistic plays and which uses the high press. Look, you can sit there and try to tell me Europe is doing it wrong, but considering where they are and where we are, that's just the height of American presumption particularly since even the boot ball English academies are drinking the kool aid. The 2 big ones that aren't on board is the US (because academies start later than Europe) and Mexico (who play the physical Mexican style)...neither paradigms of success.
I never said to give them the easy way out and just boot it up. That should always be corrected. Play your teammate and keep possession until you have good scoring options unless you see a mismatch up front for your attackers.
Teaching them to recognize numbers and when to use possession or shorter passes is very important at a young age. It's very hard to undo mental training once they are trained to think a certain way. Possession without purpose is useless and should never be taught. Skills training v complex tactical training is not an equivalent comparison because one is based on physical capabilities while the other is mental capabilities.