Re: In fact, I found it straight-up annoying to read
The quote is from the part following Case' neural regen treatment as the author points out. Gibson's Sprawl trilogy takes a while to absorb and that quote sets the scene for the later Peter and the holo-Molly lightshow on Freeside that so enrages Molly and catalyses the encounter with the Turing Police as Case tries to locate her. Gibson's "purple prose" paints a picture in the mind's eye, not that there's anything wrong with disliking it. It's a Marmite thing.