My review of William Gibson's cyberpunk novel Neuromancer is turning into an essay, so the short version:
This isn't a real science fiction novel, it's a William Burroughs style drugs novel pretending to be about the future. The book is semi-autobiographical and I'm certain William Gibson was addicted to amphetamines while writing it. Literally everyone in the novel is on drugs. Also, cyberspace presented in the book isn't a future vision of VR/the internet, it's an LSD trip.