I feel like there’s a bit of a difficulty difference. One requires basic spacial understanding. The other requires hundreds of hours of practice to become good. Nevertheless, learning both is a good idea for different reasons. Activating your brains via fine hand coordination is a great activity for children.
As a comparison, think about how much writing chinese children have to learn in school. They don’t come out as exactly poorly educated, rather vice versa. Then again, the competetiveness in chinese schools is pretty brutal, at least if I can trust what my chinese colleagues have told me.