I have no clue, have not read the PDF, and am naive and dumb on this topic. But my naive thought recently was how important language must be for our thought, or even be our thoughts, based on how well LLMs work. Needless to say I'm no expert on either topic. But my naive impression was, given that LLMs work on nothing more than words and predictors, the evidence that they almost feel like a real human makes me think that our thoughts are heavily influenced or even purely based on language and massively defined by it.