There is a bit of an incommensurability problem too. I find that most resistance to understanding thinkers/alternative discourses stems from a lack of foundational vocabulary/knowledge of the tradition they work within, and, seeing as it takes a good deal of work to acquire this knowledge, most instead default to interpreting the work under the terms and limitations of an interpretive framework (e.g. positivism, structuralism, etc.) they already understand rather than approach the new one.
There's a certain degree of bracketing--almost in the phenomenological sense--that must occur if we really want to give a text an honest chance to affect us--Nietzsche had a few illuminating aphorisms on this point, I think most of them appear in The Gay Science and Human, All Too Human for those interested.
It's a lack of a sort of meta-theoretical awareness required for resolving incommensurate theories and gauging and weighing them against each other. It's easy enough to select a theory, join in covenant with it, and retain your stance. It's much harder to bring said theory into critical questioning and reevaluation on encountering other approaches (after all the opportunities are boundless--one could levy this very critique against this post).
Number of citations do not indicate or validate the worthiness of a piece of work. Do you not realise the irony of saying that the works questioning the philosophy of science are unfalsifiable? You seem to hold that the idea of falsifiablity is sacred and that any questioning of it should be thrown away because it's unfalsifiable. It's tautological.
I've found that the only people who spout nonsense like this haven't actually studied any critical theory.
It's not only ignorance of Marx and Hegel either, Slavoj Zizek regards Marx not as a philosopher but as a sociologist and economist, however GP's words stretch further than Hegel but into Schelling, Kant and all the way back to Aristotle - to say nothing of the "metaphysical" Indian philosophy too. The idea that only Marx and Hegel are guilty of the resistance against dogmatic empiricism in the light of considering being, time, morality and epistemology is a mistake they have made themselves.