My anecdotal response to this is that I said that Angelina Jolie Tomb Raider film was clearly shit based on the trailers and the people online would claim you can’t write a film off and you have to see it, so I rented out the DVD…and it was every bit as shit as I had been able to guess from the trailers and other evidence.
So the tl;dr answer is it’s bollocks you need to read his book to counter people.