I believe that peter_l_downs was using this exotic literary device called an "example".
When you read about class inheritance, was your first reaction "This is useless, why would I ever want to have a Dog class which is based on an Animal class"?
Having an internal module know how to interact with a request seems to me to be the point of the example, and I also disagree with it, as a rule.
The module doesn't know how to interact with a request. Only with integer variables.