Style

Gibson speaks in short, terse sentences, and his language isn't exactly the polite conversation found at the family dinner table. It's a far cry from the Standard English of your typical cardigan-wearing professor. I personally like the verbiage that he uses in the book, it makes it more real and gritty. If it were standardized as per normal English it wouldn't work and would come off pretty lame.

https://www.shmoop.com/study-guides/literature/neuromancer/analysis/writing-style