Something of the sort has already been claimed for language/linguistics, i.e. that LLMs can be used to understand human language production. One linguist wrote a pretty good reply to such claims, which can be summed up as "this is like inventing an airplane and using it to figure out how birds fly". I mean, who knows, maybe that even could work, but it should be admitted that the approach appears extremely roundabout and very well might be utterly fruitless.