As LLMs have developed and have been able to cram more and more "thoughtlike" behaviour into smaller RAM and less computation, I've steadily become less impressed with human brains. It seems like the bits we think most highly of are probably just minor add-ons to stuff that's otherwise dedicated to running our big complicated bodies in a big complicated physics environment. If all you want to have is the part that philosophizes and solves abstract problems and whatnot then you may not actually need all that much horsepower.
I'm thinking consciousness might also turn out to be something pretty simple. Assuming consciousness is even a particular "thing" in the first place and not just a side effect of being able to predict how other people will behave.