He was one of several people who creatively collaborated to make the OT and its presentation magical. He deserves that much credit, but he is a fraud because he spent most of the last 40 years trying to take undue credit. Many of the things that people like most about the OT are actually not what he wanted at all. I do think he dislikes Empire Strikes Back, for instance. I do think the silliness in Return of the Jedi and the absolute juvenile presentation of the prequels are much more his M.O.

I think he just bought into the adulation and truly believed how great and talented he was, to the point where he thought he could just role out of bed and turn a vomit first draft into a movie after 15 years of retirement.