Should Uncle Bob’s example be refactored to an AbstractFactory or a SimpleFactory?

In the book “Clean Code” Robert Martin makes a statement regarding the following code:

Should Uncle Bob’s example be refactored to an AbstractFactory or a SimpleFactory?

In the book “Clean Code” Robert Martin makes a statement regarding the following code:

Seeking Clarification on the Abstract Factory Pattern

I am seeking clarification on the exact purpose and definition of the Abstract Factory pattern.