That's not WHY people say Cameron is a great filmmaker, he's considered a great filmmaker because he has been at the helm of some highly entertaining and quality movies, some of which have progressed technology on film and been impactful in that way, it's just that a large part of his success and Legacy is the money that his films generate, like for example you look at the Avatar movies and the big meme is that they're not as relevant in pop culture as they should be, I would argue that the pop culture relevancy of Avatar is the money that it made