Again you insult another man's child.There is a big difference between not understanding how to do something versus having distain for a teacher because of their age and refusing to do what you’re told until they explain why. But you know this, you’re just trying to make excuses for a belligerent kid.
This how you establish relevance is by belittling parenting and children? That is so sad and I really really hope you find some happiness or joy in your life that makes you smile.