[coolaliasbro]

"I whole heartedly agree with this. The naive approach to domain modelling is to classify the primitives of a domain into classes and stop there. In actuality, the processor of those primitives is likely what your class should be, and those primitives ought to be methodless data structures."

This is what I did not have the ability to articulate as well in an earlier comment. As far as I understand parent, the takeaway is that often OOP goes astray when the developer is unable to identify that a given need can be handled by generics/a parent class and instead instantiates their own class.