Cahiers Du Cinema used Alfred Hitchcock as their model when first defining the auteur theory. It is clear, they suggested, that when one looks at the films Hitchcock had directed throughout his career, that his vision was at work in them all.
It seems to me that Luca$h has put the label of auteur on himself and that he has increasingly been treated as such by the teams he assembles for his projects. Probably because he selects people that treat him with that level of authority. He has also succeeded in convincing most of the world that he is an auteur and is solely responsible for the greatness of SW.
I think that, the more Luca$h is allowed to produce work like an auteur, the more it becomes clear how weak his talents are. Luca$h needs a strong team around him to channel his ideas, challenge his concepts, visualise the SW universe and shoot and edit the movies if they are to be good pieces of work. Otherwise, as with the PT, they become uneven, infantile pieces without memorable qualities.
An auteur is supposed to be an individual that controls (or influences) all aspects of the filmmaking process (screenwriting, production design, casting, direction, soundtracking, scoring, editing, etc.) in order to create the artistic work they envisioned.
Individuals that can justifiably be called an auteur are very rare.
Luca$h, I believe, has shown that he is not capable of producing films of quality as an auteur. The quality of the final product depends utterly on the team he works with and, critically, their ability to question him and make changes. In recent years he has surrounded himself with people who regard him as an auteur and produce whatever he asks for, no matter how good or bad it may be. I believe that that is why the PT is so inferior to the OOT.