Earlier quoted context omitted.
> I can't easily recognize (post-)modern social construction in his worldview, especially construction of reality at large The most relevant piece is probably Theses on Feuerbach. Feuerbach advocated a materialist (e.g. essentially naturalistic) point of view to which Marx objected. His basic argument is that it doesn't make sense to talk about an objective materialist universe. That point of view leads to middle cla…
> he most relevant piece is probably Theses on Feuerbach. Feuerbach advocated a materialist (e.g. essentially naturalistic) point of view to which Marx objected. One must have a very warped understanding of Marx to claim he didn't advocate for materialism. Are you unfamiliar with his dialectical/historical materialism?
Materialism is an extraordinarily overloaded word/concept.
OP's proposing an idiosyncratic take on Marx's reading of one of his main influences seems rather more in the dialectical spirit than a no true Scotsman (no true Marxist? ;) flung without substantiation. No offense.
Given Marx was famously "not a Marxist", and given the laboriousness/verbosity of his writing, and his tendency to change his mind over time, you could argue he had merely the first in a long lineage of warped understandings of himself.