"Science" of the Gaps is made by the author of There Are No Gods (TheraminTrees) in which he speaks about the psychological manipulation behind the pseudoscience.
Pseudoscience is a system of belief and practice falsely presented as the fruit of the scientific method.
Religion and pseudoscience can drift into each other but generally speaking there is no requirement in pseudoscience to believe in any Gods, nonetheless the social and psychological parallels are remarkable.
Like religion pseudoscience offers the false promise of easy answers to complex questions through unsubstantiated claims of esoteric knowledge. Like religion its proponents deflect criticism with all the same fallacious defenses.
Pseudoscience often strikes educated, rational people as too nonsensical and preposterous to be dangerous... this is not a wise attitude.