Why materialists are predominantly materialists

[Angrboda]

I'm merely pointing out that, as I understand reductionist models, symbols are seen as structural features of physical processes and their affect. Within that interpretive framework, any significance attributed to a sign system would be a superfluous after-the-fact folk description with no causal role. Am I wrong?

(emphasis mine)

You've gone from criticizing symbols as impotent bearers of meaning to asking about sign systems. Those are very different things. And no I wouldn't say that it is inherent in the reductionist paradigm to assert that [in] a sign system, the symbols play no causal role. It may be a part of some reductionist theories, but I'd say it's more likely to appear as a straw man.