I think, and I have written this several times on this forum, that children at that age should not be exposed to such things in schools - but some will say that they have already been exposed through the media and that they may have heard about these things from their parents or siblings. Therefore, the problem may not be that they know that this technology exists, but that some of them might start using something for which they are not ready enough, and children at that age should not have any burden of financial responsibility or even making a profit.

What I'm interested in in this particular case is whether the teacher has permission from the school/parents to talk to the children about such things as part of math lessons?