Maybe we ought to add another CRM issue to the 'cross-cockpit-gradient' - a new issue we can label 'the cockpit-cabin-gradient'?
Has always been a issue in executive and charter operations, people in the back putting pressure on the front seaters. "Torch" Lewis, famous identity of USA business aviation, wrote a very good article years ago about an experience he had flying a Lodestar early in his career, and the owner issuing orders, "if you don't land at XYZ you're sacked". ILS to below minima, night, good crosswind, raining. He did, and kept his job, but the article was a teaching tool, as in, don't be stupid like I was, letting yourself be influenced against your better judgement.