America is an immigrant state all states are.
As for people trying to find anything of any value from interpreting symbolism in Kubrick films we are on a planet where people have been doing this with scripture for centuries.
It's the a human reflex to see patterns in chaos and attribute importance to the shapes one sees.
It's no less insane than studying past lottery numbers to determine what your future ones will be.
However we know that governments do things like pretend to treat diseases when they are merely studying the course of the disease.
We know they deliberately expose their own citizens to radiation to find out what the effects are.
We know they plan to blow up civilian aircraft to foster sentiment against other states.
These are real documented conspiracies, governments have always done this sort of thing it's part of what they do.
To assume anyone proposing other conspiracies have happened is nuts is nuts but to assume they are right is nuts too.