Firstly of all let’s treat bitcoin as a currency first, as currency then it is fair to expose children to it because with this they will learn just another means of making payments not using fiat. To me it is a new technology and should be taught nothing more about it.

Now to the other side of bitcoin which is investing or even trading I think this should definitely be secular, it is not proper exposing children to risky investments, if you feel there investment should be in bitcoin you has the guiding can actually purchase and hold it for them till it gets to time where they can make decisions for themselves.

As for trading we should never expose children to it, they can learn it’s analysis like the TA but they shouldn’t trade most especially futures, it only exposes them to gambling