A computer system uses that data to simulate your brain. It won’t need to replicate every last detail. Like the phonograph, it will strip away the irrelevant physical structures, leaving only the essence of the patterns.

Yeah except that this assumes that your personality, decision making and emotive states are direct results of your brain, your brain's specific synaptic patterns, or even your nervous system as a whole. That's demonstrably untrue, so all that follows is likely not correct.