Never-mind the difficultly of pulling off the conspiracy, could it be done in way that nobody else would notice?
"Never mind the secrecy, could it be done in secret?"
You must have been awfully bored to sit through something like that. Do you mean "could this scenario have been pulled off as described?"—these people, these circumstances, especially with all the leakers allegedly quoted in the piece—or do you mean "could something of this sort have been pulled off without such high profile people and operations, like NASA as a front?"
On the former, the purloined letter method is one way to cover up a conspiracy too big to be covered up—sleight of hand, the way a magician works, distracting one's focus. But in this case, why would the US and Soviet Russia, allegedly working together, permit an actual Moon landing in 1969 if a Mars colony already existed by 1962? Why tip their mitt, rather than continue to make space efforts "fail"? And if such an influential and world-spanning secret organization was working in such a unified way, why waste valuable people and resources in all this nonsense, rather than focus all of it toward the alleged goal—saving humanity?
As to the latter, it posits a massive leap in technology over everyone else, always neatly attributed to a reverse engineered alien spaceship. Secrets of technology tend to be the hardest to keep. The Manhattan Project, the US's focused response to scientific developments largely from Germany, had spies in it from day one, funneling information to the Soviets.
The reverse engineered alien spaceship is a favorite of people who do not understand the advances in physical sciences and engineering. Still, one must have
some understanding of physical principles and a suitable engineering technology to be able to reverse engineer something. If we dropped some semiconductors or even vacuum tubes on the best and brightest in the 1700s, would they have broadcast television by 1800? Even assuming the nature of the devices could be puzzled out, there was no technology available to duplicate them.
The video was a disjointed mishmash of statements. For example, the opening sequence alluded to a couple of sci-fi movies, then marveled how life imitates art. (Huh? What real life events imitated the movies?) One could go on for days about the non sequiturs—such as teleportation is for people, while cargo must be sent by ships. It reminds me of one former co-worker who believed the hoverboards in BACK TO THE FUTURE II were real. Then why hasn't the technology completely remade our shipping and transportation systems? "Because it only works on toys." Right.
If any group develops a certain technology, the rest of humanity is typically not far behind. Reverse engineering alien technology could potentially give one group a massive boost, but that's completely speculative. (Remember the Manhattan Project.)
The hardest pill to swallow is the idea that a secret group of people from all over the world are working together to keep the rest of humanity in the dark. Such a group would understand that "wealth" is not some limited resource, but generated like electricity. It would then be in their best interest to educate everyone, rather than bamboozle them.
And that's the real paradigm shift—getting those people who believe that all resources and wealth are a limited pie to be hoarded to understanding that intelligence and technology are what bring those resources into being.