This is one of those "we can't prove it doesn't work, so it might" types of things. My guess is that consciousness is way more than simply the physical connections (or "connectome" as they put it). It is probably a particular configuration of activity and potentials within a living connectome, and there is even a minority view that it arises from the microtubules within the nucleus of each neuron, as a sort of emergent form of quantum computing.

I would be surprised if simply perserving the physical substrate, however perfectly, would allow a consciousness to be recovered. It's certainly a step forward from the crude freezing process that other people have paid to have their bodies or just their heads preserved in the past, and less unlikely to allow some future "resurrection". But it is still very unlikely to work. It's a desperate shot in the dark.