It's a fair point but neither of which is objectively "wrong."The narrative experience changes when the episodes are watched episodically. The old traditional method is based on the story being about Luke Skywalker with the PT providing a backstory for Vader. However, if one takes it episodically, the narrative is about Anakin Skywalker, his origins, rise, fall, darkest moments, and then redemption through his son. Followed by his aftermath and legacy in the Sequel Trilogy (so far).