We do do genuine reasoning. It would take a lot of practice for us to learn it but we also use less "electricity" to do it.

The thing about LLMs is there doesn't seem to be a way to teach them genuine reasoning. You can spend a month teaching an LLM brainfuck and it would likely still fail at a novel problem. Whereas if a human studied brainfuck for a month they would probably be quite competent at a novel problem