I'm still surprised, when I bother to think about it, that no eager beaver has come up with the idea that perhaps the US did land on the moon, but only thanks to alien technology reverse-engineered from the remains of 1947 Roswell crash.

I can't speak for your specific example, but there are some theories that equate the massive technology leap we had in the 50s->present day has been due to reverse engineered alien technology.

In fact Star Trek: Voyager did a two part episode that used this conspiracy theory as part of the main story line.

I think I remember that episode.

I suppose "aliens" are a much more attractive explanation than "government-funded wartime R&D centers plus post-war prosperity plus Cold War arms race equals massive scientific advancement"