What's at work there is the satanists' karmic faith in their absolution for their crimes/sins. If and only if they first impart to their oppressed what they must do to prevent their demise (typically, give in to blackmail), then if those intended victims don't do what has been demanded, it's OK within their code to level the satanist's earlier-predicted consequences. That is, they're free to make the recalcitrants slaves to the NWO, kill them outright, use them as sexual pleasure toys or whatever they said they would do.
Yes, I agree with the metaphysical aspect of telling us what they have planned so that we still, in theory, have the ability to utilize free will to reject the Faustian bargain. As our culture degrades and our connections to the Transcendent have become attenuated over the last hundred years (at the very least), our ability as a culture is losing the gift of discernment which is crucial to making the right choice. We need the full armor of God to heighten our perceptions and be aware of what the dark forces are telling us they have planned.