Initially I was thinking "could be AI, could just be A3O-quality writing", but that whole "my grandmother's skin was as soft as a spiderweb" thing seems a bit much. It's very hard to imagine a human writing that.
It is very easy to imagine a human being writing the corporeal homosexual horror of the Naked Lunch, especially a human being gone on a heroin bender in Tangiers drifting in and out of consciousness.