Similarly, coordinating a hoax on that scale would still require the oversight of each part in no different a way to project-managing a genuine effort would.
So you'd still need a management team to oversee fake aeronautics, one ot oversee fake astronaut training, one to oversee fake mathematics, oversight of fake fuel development, oversight of fake communications tech, and so on and so on.
It gets to the point whereby you are devoting just as much, if not more time and resources to faking it as you would be doing it for real.
So even if every single one of the people involved in the individual project areas believed what they were doing was legitimate, is the suggestion that ultimately, there was someone or a panel of someones sitting somewhere who decided "well look, we've been handed on a plate absolutely everything we need to actually put a man on the moon, but let's not actually do it, let's just pretend instead"?
If not, then the only other conclusion is that absolutely everyone involved knew it was a hoax and not a legitimate effort right from the start, and that's where this immediately falls down due to the sheer scale of lying involved and the total improbability of keeping the hoax suppressed even 50+ years later.
For example - All the people who spent months working on complex mathematics to ensure NASA got their launch trajectories, burn cycles etc spot on - why have them do all that work just for it not to actually be put into use anyway? Just for the sake of being complete and convincing? Well they were certainly doing the maths for real and came up with real solutions and real answers, so all the maths you need to go to the moon is sitting there on a plate anyway...