GabeN mentions similar in a video with IGN a few years ago.

Machine brain interfaces can reliably model thought to action of using ones arm, for example.

But it cannot model "feeling". It's, as of that interview, an intractable problem to map all electrical activity in us given external stimuli. Every body "feels" a cold stimulus in a different part of their. This wasn't qualitative either; imaging technology shows activity unevenly occurs across every human body. Put an ice cube on someones hand, their left knee tissues may react. Put ice cube on another person's hand, back of their neck reacts not their left knee.

Then there are stories of people missing the majority of their brain but only learned this medically after living a normal life; going to college, holding a career together for a couple decades.

Brain-centrism was just as dumb as our other takes that attempt to demarcate a center to our center-less universe. Even just practically speaking, I know a lot of PhDs who cannot cook or rotate a tire. Where is the intelligence in letting oneself end up such a helpless, and thus codependent, tool?