He is not seeing real people, of course. This is all a part of the moving illustration drawn by his computer according to specifications coming down the fiber-optic cable. The people are pieces of software called avatars. They are the audiovisual bodies that people use to communicate with each other in the Metaverse. Hiro's avatar is now on the Street, too, and if the couples coming off the monorail look over in his direction, they can see him, just as he's seeing them. They could strike up a conversation: Hiro in the U-Stor-It in L.A. and the four teenagers probably on a couch in a suburb of Chicago, each with their own laptop. But they probably won't talk to each other, any more than they would in Reality. These are nice kids, and they don't want to talk to a solitary crossbreed with a slick custom avatar who's packing a couple of swords.
So this is it. The metaverse end-game, except instead of The Street we just get 'the street you are standing on' with your retinas being sprayed with lurid depictions of pedestrians who've configured themselves to show up as their desired sex, weight, hair color, dick size, fursonas, or favorite Naruto outfit.