I think we know too little to comfortably (ie based on evidence) put to rest the argument of how a mind functions. I do take an emergent perspective on intelligence and that colours what I think can ground a mind. The brain can ground a mind and a brain will have physical limitations. To what extent those the physical limitations of the brain are also limitations on the mind is not known.
But, let's just say we accept the brain is some form of neural net - the reality is we're not even close to building a neural net that matches the scale of the brain. That's even before going into how we train that neural net. In a practical sense, the level of sophistication is not there yet.