I think most of those theories stem from some film being cooked as the astronauts passed back through the radiation of the ionosphere. Given the political climate of the cold war, the US needed an ideological victory, so the surviving footage was patched back together with some studio footage.
Hence, parts of the footage look weird, all evidence points to a legit moon landing, and Neil gets extra pissed when people call him a liar, because he really did go, but can't tell the whole story. This also covers the "too many people to keep a secret" argument, because only the astronauts, film techs, and spooks would ever need to know about it.
As for the hologram stuff, I can't even pretend to understand where that comes from.
Not just the hologram...but the fucking Nazis on the moon bro.
If the moon is a hologram...then the Moon-Nazis are also a hologram...
Which means Hitler was the AI....
omg.
The moon being fake no not the the moon landing the freaking moon apparently some people think its a hologram.