I've wondered about this. Do we really know enough about what the human brain is doing to make a statement like this? I feel like if we did, we would be able to model it faithfully and OpenAI, etc. would not be doing what they're doing with LLMs.
What if human cognition turns out to be the biological equivalent of a really well-tuned prediction machine, and LLMs are just a more rudimentary and less-efficient version of this?