As a child, no one explained to me how to properly deal with the income that came in. That you should not spend it all within a certain period of time. You should put aside some part or, better yet, invest this money.
That's why it's considered a privilege for a child to learn the tools and skills to manage a budget, no matter how small. These methods are supposed to be learned theoretically in the early years of school, and then learned practically by observing family members (parents and siblings) and performing tasks using small amounts.
Yeah, if in his early age he was guided how to budget and save his money then when he grows up he'll be able to adopt it and he will value every single penny that he'll be earning, it's good to train your kids as they will grow with good knowledge about finances and it will also gave them edge to their generation as they can be financial free when the time comes that they already save and invest a lot.