I think the wording of the second part is crucial. Thinking if you can factor it out is a way different beast than "you must refactor to obey DRY". Implied in y

I think the wording of the second part is crucial. Thinking if you can factor it out is a way different beast than "you must refactor to obey DRY". Implied in your statement is whether or not the abstraction can be made simply, efficiently, cleanly, etc. which all serve to make it a good abstraction. If your only priority is removing duplication at all costs, you'll end up with worse code than if you just let code be duplicated.