This needs to be amplified + defensive caveat regarding subscription to any “youtube” theories. That said, a member of a large organization, such as the US military, will have many stories to tell and phrase “FUBAR” iirc came out of the US Army. In fact, even being in smaller commercial enterprises, one sometimes wonders that anything gets done at all!
But things get done. The military can plan, provision, conduct, and win wars. Systems tools and state-spaces are the tools of top level control mechanisms. So, yes, things can be chaotic when viewed from a narrow perspective, but from another top level perspective, there is order.
It's really hard to turn back on the "but realistically, conspiracies are uncommon" brain when exposed to the fact that actually decades-long conspiracies do actually occur and produce results.
[Caveat: I don't actually believe in shit like flat earth, and am skeptical of all conspiracy theories if their evidence is some shit like a 45 minute youtube video with their own sources of, idk, a blogspot post. But I do want to acknowledge that conspiracies have been reported on in relatively trustworthy news reporting sources, and that I myself find it really difficult to determine true vs fake conspiracy theories if multiple news reporters are contradicting each other.]
As you said, you don't send people into the street to yell at other people how the soviets are evil and we need to arm up. You rather plant ideas into the heads of a few influential people in hollywood, then give them cool toys and props for the movie, and let it roll downhill from there.
This is similar to work - and we're not large with ~150 techies in the company. But it has grown impossible to directly steer all different teams. Instead, you have to see that the right trailblazing teams are going into the right directions and possibly make sure that service requests moving into the right direction are quick, and service requests moving in the wrong direction.. well either roughly stay in the SLA or get blocked.