I don't really see what impact this has on our ability to extract information from a person's brain. We can already stick brain-computer interfaces into a brain

I don't really see what impact this has on our ability to extract information from a person's brain. We can already stick brain-computer interfaces into a brain while it's attached to the rest of a body. The significance of this technology combined with BCIs is in my opinion positive; that people may be able to have a meaningful conscious existence without a body, beyond their natural death.