The writing went south during the PT because Lucas simple started to take more and more unilateral control in keeping a cohesive film saga. What then happened was that instead fo a stand-alone film or a six hour film trilogy, you have an unwatchable 14-hour film, riddled with as much contradictory statements as there are CGI effects. This is what happens when marketing and narcissism replace actual filmmaking. (And the reason why film is practically dead in the present day)