Re: I have said this before....
Il's not always as black and white a that thought. In my last job, there were a few times where I protested my orders as being stupid and time-wasting; I was concerned about the inefficiencies that would arise if those orders stood. Having made my protest, if the powers that be decided that the orders should stand anyway, then fine - I had done my duty to the company by pointing out that the planned course of action would make things worse, so responsibility for the outcome was then with the higher-ups.
Contrast that with another time where a director wanted our team to do something actually illegal with customer data. My boss and I were horrified - the more so as that particular director had legal training themselves. My boss and I refused, and pointed out both our ethical objections and the legal ones. The directors directive was quickly rescinded, and we remained with the company for many years thereafter.
So no, it ISN'T always simply a case of "you do what I say or there's the door" - generally the folk who think like that have too simplistic a view of the world to run a business well, if they aren't downright incompetent, as well as being ethically deficient.