Some of his claims are just downright bizarre. Many, even if true, would make no sense in the context of a hoax. It's just the usual denier's collection of "anomalies" that are somehow supposed to mean something.
A while ago he showed a picture of an Apollo CSM taken through the LM rendezvous window just before docking after lunar ascent. He objected to the fact that we could not see the side of the service module except for part of a thruster quad. The reason was obvious: the camera was very close to the CSM's X (longitudinal) axis, i.e., within the radius of the CSM, so from simple perspective one could not see the exterior of the (opaque) SM.
Many of his videos make it clear that he has great difficulty correctly interpreting 3-dimensional objects depicted in photographs, something that most people find intuitively easy.
I'm reminded of something that Bellcore's Bob Lucky said back in the 1980s about artificial intelligence: it was just a matter of time before a computer became the world's chess champion, but we still don't know how to program a computer to walk into a room and merely find a chessboard -- something that any 5 year old (sighted) child with average intelligence can do quite easily. It demonstrates just how vastly different computers and human brains are in the way they operate.
It's hard to study a mental process that seems so intuitive and effortless to almost everyone. But maybe there are a few people who lack this natural ability, and they may someday help us understand how it works in the rest of us.
Another Hunchbacked gem has him claiming that the famous hammer and feather demonstration on Apollo 15 was faked; the hammer's fall (which really took place in earth gravity, naturally) was retarded to simulate lunar gravity by sliding down a blanket on the front of the MESA. I tried to point out that a) Scott is standing in front of the MESA and b) the hammer falls in front of Scott; ergo the hammer must fall well in front of the MESA -- to no avail.
It's almost as if his mind can interpret a perfectly ordinary scene as though it were an M.C. Escher painting of an impossible scene that actually exists. Or something.
Sometimes I wonder if hunchbacked/inquisitivemind is actually a very elaborate and long-running practical joke, because no real, rational person could seriously believe the claims he makes. Yet he seems absolutely sincere.
I know people often object to performing armchair psychiatry over the net, but it's very tempting.