But [Ian] Sinclair's faux Lovecraftian subtexts, like Moore's blood-drenched conspiracies in From Hell, finally lose traction in the way that all conspiracy theories do: The description of an underlying, literally occulted order is invariably less complex than the surface reality it supposedly informs. Conspiracy theories and the occult comfort us because they present models of the world that more easily make sense than the world itself, and, regardless of how dark or threatening, are inherently less frightening.
— William Gibson1
Conspiracy theories are double-edged in the writing of horror. They can be highly evocative, but they always suggest the poor thinking of the true believer. For example, conspiracy theorists have suggested that the Sandy Hook Elementary School shooting of 2012 (external link) was staged to take away guns from civilians. Rather than face a depressing reality, these people formed the more comforting belief that they were smart enough to see through a nefarious deception by their supposed enemy. In this deviation from a normal world view, the conspiracy theorists elevate themselves: Only they see clearly. Their belief in permissive guns laws as necessary for armed protection against a corrupt government appears justified by the event. The terrible human cost of the massacre is denied.
Any improbable conspiracy theory has the same ring of blinding egotism. Fortunately, Delta Green canon makes reality complex and undesirable indeed. Delta Green also avoids the trope of inserting dramatic fictional explanations for historical events.