The article doesn't mention it in the first few paragraphs but these delivery robots are not autonomous, they're controlled by people, usually in a different country.

Here's an article detailing Kiwi's approach. Every other delivery robot is the basically the same.

https://www.sfchronicle.com/business/article/Kiwibots-win-fa...

> The Kiwibots do not figure out their own routes. Instead, people in Colombia, the home country of Chavez and his two co-founders, plot “waypoints” for the bots to follow, sending them instructions every five to 10 seconds on where to go.

> As with other offshoring arrangements, the labor savings are huge. The Colombia workers, who can each handle up to three robots, make less than $2 an hour, which is above the local minimum wage.