That may be because the new philosophy of mind abandoned old traditional concepts from Socrates, Plato and Aristotle. You don't simply discard something they said without a damn good reason in philosophy... These are the GOATs. To them, what made the human mind fundamentally different from an animal's mind (or a neural network, for that matter) is that what gives us self consciousness is not the brain per se, but some aspect of the soul. Something imaterial inside us. If they are at least partially right, the search to understand the mind is going in the wrong direction when studying only the brain and its material aspects