I do not think that kids should be taught about bitcoin just yet -both kids and teenagers alike. What should be taught to them is how to spend money smartly (such as knowing when to spend, when to save, what to save for... etc.)
Bitcoin is a bit too advanced for most people and takes an extensive knowledge to know cryptocurrencies at a decent level.
Kids lacks of focus in crypto because they are not matured yet, there is time for that and just let that kids
explore the world as eventually they will reach the right age where we can say they are matured and that's the time we will
start helping them to learn.