What a mishmash of odd claims you make
(1) whether NASA's website features them or not, lots of A11 launch footage exists and is easy to find. You don't appear to be claiming that Saturn V rockets never existed so what does it matter whether NASA's politics/marketing decides to feature particular content?
(2) If there is no single continuous film of the first stage burn this isn't all that surprising since at burnout it was 62km high and 93km downrange from the launch pad; the view from tracking telescopes in the Bahamas may be superior. Once again, so what? (unless you doubt that any kind of rocket flew into orbit at all)
(3) The stage separation films come from Apollo 4. The initial burst of yellow flame isn't pure H2/O2 - from the annotation of Apollo 8 flight journal: "Half a second after shutdown of the first stage, the four ullage motors mounted around the interstage ignite, followed a fifth of a second later by a command to fire the first separation explosive and ignition of the eight retro rockets mounted in the conical fairings near the base of the S-IC. The two sets of rockets firing in opposite directions pull the two sections of the vehicle apart. Physical separation comes soon after and half a second later, the J-2 engines on the S-II stage are started." - to which you can add that the colourless exhaust then playing on the top of the receding first stage is also producing brief incandescence.
(4) "Project orion: 18 years in and they just got around to landing with parachutes. You think they did it in 2-3 years in the late 1960s" - no, I think they did parachute landing in the early 60s. All US manned capsule craft landed under parachutes, and Mercury and Gemini were designed, built, and flown in a few years. This doesn't make Apollo look impossible, it simply highlights how dire Orion has been
(5) If the moon was smooth then a chest-mounted camera would see the horizon 2200m away. Undulating cratered terrain will shorten that view (just as a boat in rough seas has on average a restricted horizon of relatively near wave-tops), uplands and mountains will lengthen it. Mare Tranquillitatis was the landing site for Apollo 11 precisely because it was big and flat, landing perhaps 90km from any really interesting terrain made for dull photos but better chance of success.
And so on...