If you meet someone who says that their AI will do XYZ just like humans ... Say to them rather: "I'm sorry, I've never seen a human brain, or any other intelligence, and I have no reason as yet to believe that any such thing can exist. Now please explain to me what your AI does, and why you believe it will do it, without pointing to humans as an example."

This seems the wrong attitude toward someone who proposes to pursue AI via whole brain emulation. You might say that approach is too hard, or the time is not right, or that another approach will do better or earlier. But whole brain emulation hardly relys on vague analogies to human brains - it would be directly making use of their abilities.