He's definitely a conspiracy theorist, but the term "hack" implies a lack of talent, and Stone doesn't lack talent. He wrote MIDNIGHT EXPRESS, a very good movie. PLATOON was a good movie. JFK was loony from an historical perspective, but bravura filmmaking.
Well Platoon was loony also from a historical perspective... Unless you agree with John Kerry they that all Vets in Vietnam are war criminals and baby killers...
makes you wonder how limited his creative control was in his early efforts.