Propaganda in the ordinary sense of the term plays a less important part in a consumer society where people greet all official pronouncements with suspicion.
But like a born actor who only really wants to direct Gingrich has always been unsatisfied with what he's brilliant at. He can't still his hunger to deliver grand pronouncements on life liberalism conservatism religion and whatever else swims into his consciousness.
One could write a history of science in reverse by assembling the solemn pronouncements of highest authority about what could not be done and could never happen.