Trying to figure out a madman's word salad is no easy task. However, here is some of what Dec is trying to say (hope I don't forget anything).

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He hates Jews and Blacks.

He lived in the hight of the Cold War ("containment policy" references)

He's studied Communist writings ("inculcation of conformist propaganda", "inevitability of gradualness", etc.)

There's a city sized computer (remember this is the mid-20th century when computers filled a whole floor on an office building) on the dark side of the Moon that influences the thoughts and controls the actions of humans on the Earth (turning us into "parroting puppets).

Our eyes and ears record everything that happens and transmits it to the computer on the Moon.

Everyone who has ever been in a hospital (that includes birth) has been medically experimented on (Frankenstein references).

He's so paranoid that he believes the natural aging process is caused by ambulances that abduct you in your sleep and automated medical devices preform procedures that give you the effects of aging.

There are two Francis E Dec references hidden as easter eggs in Myth 1 and Myth 2. You go by some weird monument and if you taunt with a dwarf he says one of a few dec-alicious lines.