That site is terrible!!!
Apart from the spelling and grammar being about the standard of a child of eight, which we're not now allowed to mention on PPRuNe, his/her understanding of so many details is appalling - but he bases so much of his case on those misunderstandings. For example, the point he uses time and again about no lunar atmosphere, hence dark shadows. Does he not understand that there is very, very bleak light, unattenuated by atmosphere, and that light is reflected off everything?
He gets very confused about whether the far face of the moon is the far side or the dark side, ignoring the phases of the moon, and consequently seems to think that we always have a full moon as seen from Earth, since the near side is the light side!
He has no idea whatsoever what the Van Allen Belt is, doesn't understand the propagation of radiation and convection of heat in a vacuum and in an atmosphere... I could go on and on...
To suggest that the whole thing was a scam, that NASA would waste so much effort in convincing us of a lie, is just plain stupid. When you add to that the deaths of Gus Grissom, Ed White and Roger Chaffee, this is no more nor less than a gross insult.