No, you are wrong.... all the people that had anything to do with the mission would also have to know it was a big facade. Think of all the people it would take in production, set design, location managers, and on and on and on. All of these people for every lunar mission, every mars mission, every satellite launch.... all would have to be in on the secret. It would literally be 100s of thousands of people.
Commercial airline pilots couldn't be left out. After all...they can see the curvature with their own eyes and they also create flight plans that factor in the coriolis effect. Not to mention the pilots that fly from S. Africa to Sydney. Remember them? These pilots fly in a flight path that's impossible on a flat earth. They would have to be instructed on how to lie to keep the flat earth a secret and make sure no one REALLY knew what their actual flight path was and how they could accomplish it with one tank of gas and in just 13 hours.