They are comparing "working in IT" with working as a vet or becoming a lawyer.
In my opinion it has more to do with teaching critical thinking skills vs. memorization. That is why I try to make sure people learn the concepts rather than just remembering manual pages. Critical thinking has benefits in many aspects of many career fields. The goal in my example is to start with something fun yet a little challenging that requires experimentation with things one can not find in documentation to bend the system, bend the rules and hopefully bend their way of thinking outside of the box.
In my opinion it has more to do with teaching critical thinking skills vs. memorization. That is why I try to make sure people learn the concepts rather than just remembering manual pages. Critical thinking has benefits in many aspects of many career fields. The goal in my example is to start with something fun yet a little challenging that requires experimentation with things one can not find in documentation to bend the system, bend the rules and hopefully bend their way of thinking outside of the box.