>>212188564It's just because directors have too much power in Hollywood, really. You can't go talking about it in an official enough capacity for a book to be written because then that director and his friends or the studios connected with him won't work with you again, so you're blackballed from most of the industry. Once the director actually dies the stories come out officially, like with Hitchcock or Kubrick's shenanigans.
Once Nolan dies I bet there'll be a TON of stories about how stupid his autistic refusal to do retakes was, for example, lessening perfectly good scenes because an actor or extra screwed up their choreography and he refused to give them a second chance for no good reason. With all the actors agreeing that working with him was a chore because you can never know if your first attempt at a scene will be the best one and he saddled them with bad ones, making them look bad. It's no coincidence that otherwise fantastic actors appear to be way worse in his movies.