I don't need to do that unless you think that neurons interact exactly the way that LLMs do? That said, we have detailed, microscopic models of neurons, the ability to even simulate brain activity, intervention studies where we can make predictions, interact with brains in various ways, and then validate against predictions, we have cognitive benchmarks that we can apply to different animals or animals in different stages of development that we can then tie to specific brain states and brain development, etc.
So we're in a very good position to say quite a lot about the brain, an incredible amount really. And that puts us in a very good position to say that our brain is very different from other animal brains, and certainly in a very good position to say that's very different from an LLM.
Now, you can argue that an LLM is functionally equivalent to the brain, but given that it's so structurally distinct, and seemingly functions in a radically different way due to the nature of that structure, I'd put it on you to draw symmetries and provide evidence of that symmetry.
I'm following this mini-thread with interest but I've arrived here and I confess, I don't really know what your argument is.
I think this all stems from you objecting to this statement:
"I don't know why I am still perpetually shocked that the default assumption is that humans are somehow unique."
I think you're being uncharitable in how you interpret that. Human's are unique in the most literal reading of this sentence, we don't have anything else like humans. But the context is the ability to reason and people denying that a machine is reasoning, even though it looks like reasoning.