Show me some revisionist history written prior to summer 1977 then. There was plenty of credit given to everyone who made the first movie the hit it was at the time. Whatever has been distorted since then doesn't change that. Us old geezers that were around back then remember, because we eagerly read every little scrap of info we could get our hands on.
If you can prove Star Wars could have been made without George being involved in any way, you are more then welcome to. The old George used to listen to the people around him, even if it was grudgingly.