Why you personally selected it doesn't have anything to do with whether or not it was intentionally planned in advance.
Come on. I'm not the only person who would examine alternatives and pick overnight flights because they included lay flats. Once they have my money, they can swap in the old rust bucket and I can't get my money back because the CoCs they wrote don't make any guarantee of service levels or quality. Why do you think the airlines write the CoCs and all of them provide extremely limited recourse for the buyers?