I'll explain
The FoJ is like Santa-Bot from Futurama. It's moral standards are so high, it's going to punch everybody, but the fist doesn't do any damage, it just annoys the person hit. It hits whoever is nearby and the reason is that the creator of the fist was an insane wizard who wanted to teach some annoying kids across the street a lesson in minding thier own business and not touching dangerous magical things, but it got out of hand. No, it will not teach children that violence will solve problems, because the fist doesn't solve problems.