The scientistic worldview is objective-reductionistic: superficially, it is metaphysical materialism (a world constituted of material and forces within space, of some nature or another); methodologically, it believes that both subjectivity and objectivity is an emergent property of the kinds of entities that can be observed from without and comprehended factually.
The religionistic (my coinage, I think) worldview is subjective-reductionistic: superficially, it is metaphysical idealism. Not only is it true that (quoting the Dhammapada) “mind precedes all phenomena and of mind are all phenomena made” — an indisputable fact, systematically passed over by the scientistic faithful — but that behind the phenomena is an essence (called “noumena”, “the thing in itself”) of the nature of mind or idea.
Both points of view are equally metaphysical and reductionistic. Then there’s phenomenalism that brackets all metaphysical projection and thinks within the terms of phenomena as such.