2. 'It's a spectrum' doesn't address the point. You claimed LLMs approximate brain function because they have similar architecture. Massive structural variation in biological brains producing similar function undermines that claim.
3. You're still missing it. Humans use language to describe discoveries made through physical interaction. LLMs can only recombine those descriptions. They can't discover that a description is wrong by stubbing their toe or running an experiment. Language is downstream of physical discovery, not a substitute for it