Age is not a limit, but it would be better if we talk about children, so providing insight from the start and trying to guide investing in our teens is clearly highly recommended.
The age of children is still vulnerable and I don't think it is suitable to talk about investing at their age.
Learning may be great but it is certainly not urgent and must be done in childhood for them. Their souls are still very free and of course allowing investment for too early age also has a negative side there.
Many people believe that the earlier children are educated, the richer they will be when they grow up. I can say that it is a misconception. I was a later bitcoin investor than many, but now I have made more profits than the people who joined before me. Sooner or later it doesn't matter, as long as we make better use of the opportunities presented, we can make more profits. Children too, do not rush to teach them about bitcoin, teach them when they are mature enough.
As I said earlier, giving understanding from childhood is still good, but that doesn't mean that children should be immediately left in the investment.
Their condition is still not very suitable for their age because indeed the age of children is the age where they explore all things that are fun, not immediately filled with money. maybe for an older age like adolescence it's just right but for a child's age I think this can ruin their childhood if it's too porous and taught prematurely.