This being HN, I figure I can make this criticism and be understood even if it breaks the rules here:
Either Little League operates on a human web of trust-- where parents show the documents to a human like you, who then signs-off on the age/residency verification, on up the chain as the Linux Kernel devs work; or, Little League requires a sophisticated digital system for accepting and verifying the documents with lots of personally identifying information in them. If it's the latter, fine-- but then that system is subject to the same scrutiny that Signal, Clubhouse, Experion, and every other digital system out there.
With that in mind, Little League's privacy policy as written is a dangerous pile of horseshit, and your rank speculation that they're probably not leveraging it the way the rest of data miners would isn't helping.