If kids start buying Bitcoin at their age it would be an advantage to them when they grow up but that's just something that we can assume because in reality what do you expect kids to know about Bitcoin. First of all, buying Bitcoin isn't just about having the money available it takes a certain level of maturity to make the financial decisions to carry out that task, you cannot expect kids to be psychologically ready to invest in Bitcoin at their age.
A minor cannot buy Bitcoin but they can get involved in the process of just learning about it and being introduced to the system. This can only work if the parents of these kids are making the investment for them while they are still young but for these kids to make the decisions by themselves, that's not really possible.
So, the point is, not all children can invest in BTC because most children don't have jobs yet, and if they're still in school, it's certainly more difficult for them to invest. However, as the op said, if a child has good intelligence, then they can invest in BTC as long as they have a lot of money, whether because their parents are wealthy or they already have a business or business even though they're still in school. So, the point is, in this case, it depends on the situation and conditions.
But your opinion is also correct. If, for example, a child doesn't have an income or is still in school, etc., it would be better if the child was informed or guided about BTC and other things. But in my opinion, a child can invest in BTC if they have money, a good situation, and intelligence. But if they don't have that, it's difficult. However, it's possible for parents to buy BTC for their children if the child doesn't understand BTC, and it seems quite a few people are doing that now. And I'm also curious if there are any parents here who buy BTC for their children? So that in the future their children can have big profits.