If you want to teach a kid how to play baseball have him catch. When my son was nine all he wanted to do was catch. He said the other positions were too boring. He caught through age twelve. At eleven I started playing him more at short. But when all stars came around he caught every inning except for a handful he pitched.
Catchers are in the game every pitch. They have to understand everything that could occur on the field. The 6th tool may be instinct. But catching enhances it.
My son moved to short (my decision as a coach) and ultimately center (his 17u travel coach’s decision followed by his high school coach). He was too fast, quick and athletic to catch long term. But catching was a great training ground.