My uncle raised his kids similarly, "they have to always be doing something!" with the side effect being that they sunk thousands of hours into learning skills that served no intellectual/real life purpose (beyond team building), and took time away from their actual interests. One was interested in building drones, but spent his time hitting balls with a stick, instead. Anytime I need someone to hit things with sticks, I call him. I haven't had to yet, but one of these days!

Every success story, intellectual or not, involves passion and time. I'll never comprehend the mindset that completely prevents a kid from experiencing both.