if the kids builtp arm strength as they go thru youth ball the arm problems would greatly diminish
I agree but the operative word here is if.
Kids have two problems with their wiring that makes getting them to do what is needed to build up arem stength difficult
Most, but not all kids,(and we are talking about kids) find the exercises and bandwork needed to build up arm strength boring. Just like T drills are boring but essential to a hitters development doing the little things are pulling teeth to a majority of kids. They can be boring, especially if they do it every day. There isn't some immediate payoff for all of this work and an 11 year old is very now centered.
The other problem is that the average 11 or 12 year old has no concept of injury like most of us old farts. We have a concept of it because, well be have screwed ourselves up. We can preach to our kids all day about how 'if you don't do this or don't do that you are going to pull or tear something' but until it happens they have no real concept. Unfortunately then it is too late.
I could get into more, like the fact that most coaches at the 14U level (and many beyond it) have no idea what a true arm strengthening program is or how parents have no idea of what they should be doing for their kids early on if they want to pitch. The vast majority of kids at the 14U level don't even pick up a baseball until February or March.