While we are in the business of armchair psycho-analysis, George's father, rendered him bald (or as near as by practically shaving his hair off) and emotionally scarred by the resulting bullying which turned him into a loner obsessed with fast vehicles and technology.
After that he became a hero to some until he became obsessed with building and maintaining his personal empire after falling out with his well regarded wife.
It's easy to see why Vader would become the final focus of such an author.