The demand for food delivery in the places where the robots are viable is nearly infinite. My city has had them for two years and there are still just as many humans doing deliveries, they are just sharing the already-crowded sidewalks with robots.

I don't use them; not because of any moral objection, but because they can't come inside buildings. The whole point of food delivery is to avoid going outside. Most human couriers come directly to your unit. The food delivery companies have spoiled us too much, and we are not ready to return to a world where you have to put on shoes to get food. Oddly, the delivery robots are probably better suited to suburbia, where folks are used to answering the front door to pick up a food delivery. But the distances involved aren't viable until you have delivery Waymos that can move at highway speeds.

They're seemingly talking about a motorized platform inside a restaurant delivering to "the table" not those door to door delivery robots you drop food inside that drive on the sidewalk.