I agree that none of these metaphors, including the digital computer one, have come close to providing anything close to an explanation of consciousness, but if

I agree that none of these metaphors, including the digital computer one, have come close to providing anything close to an explanation of consciousness, but if the premise that a sufficiently-detailed digital simulation of a brain would have a mind turns out to be correct, then, by Turing equivalence, there is a sense in which the medium does not matter. Of course, none of the pre-Turing materialist claims were predicated on this insight!