In this case of the boy, I remembered one thing that the children will be developed in the same way as the parents raise their children from childhood. The boy's father may want to expose his son to Bitcoin from an early age.
I will not be against you introducing bitcoin to anyone including your own children, because it is your right and responsibility to those you introduce it to. But you also have to pay attention to their age because for young children whatever they see is just for fun and once they see another, more interesting picture they will also forget the previous one. It's how young children grow every day and there's no reason for them to be interested for long periods of time in something they know nothing about.
That's also how I teach my children to be interested in drawing and usually every day I give them a cartoon picture to redraw in a book and the next day when I give them another picture, it will also be illustrated again with the new picture I gave. That's the daily life of young children and there's nothing more interesting than playing for them, because the learning process will be in accordance with what is given by their parents or teachers.