I agree with you. No need to stress children with complicated stressful stuff. Let them live childhood peacefully. Blockchain is a complicated subject for adults.
Even if you are right, but come on, in this case we are only introducing, not imposing our will. Don't pretend that introducing bitcoin to children is a mistake because in this case we are also required to direct children to better things and introducing bitcoin can be a good option for the future.
What do you mean by "even if you are right" ? He is right. Even though kids brain is like a sponge and remembers all the info, if they find it boring (and I bet they will) they will just listen and forget about it. As a kid, if they can use it or see IRL example, they will forget about it. Kids learn from their surrounding. We dont need to teach them, we need to use it ourselves, and if this becomes interesting for them, they will learn everything themselves, especially if their friends will talk about it.
Kids learn only what is cool and modern, but not what we teach them. We need to teach teenagers and students (even though they are also kids in my eyes). If they find cryptocurrency interesting, then crypto will become "cool" and kids (does not matter their age, 4 or 12 years old will wont to be in trend identically) gonna learn it themselves.