Yes I said mentioned by theorists. Used as justification for modern theories such as the one you just posited.

I agree with the general sentiment of military industrial complex promoting fear to boost their own budgets. That's a natural self-interest like all power structures financed by public influence. But I doubt it's a direct collusion by agencies to deceive the public. I have a feeling they believe their own bullshit.

It's easy for humans to justify incorrect things to themselves, ala confirmation biases. Very similar to why conspiracy theories spread.