Is my child too young for this?

Almost certainly not. When a subject does not land, the usual reason is that the explanation was still wearing adult packaging, not that the child was not ready.

That is the whole basis of the crayon test on this site: if an idea cannot be drawn, we treat it as our explanation being unfinished rather than the reader being too young.

A real limit does exist, but it is about dependencies rather than age. Investing needs money and saving in place first. Search engines are easier once websites make sense. The order matters more than the birthday.