alt Hacker NewsCuts both ways. When I go to the grocery store, I buy 30-40 items at once. When I buy them Amazon with Prime delivery, I usually order stuff piecemeal, in the heat of the moment. Sometimes, Amazon will consolidate two orders in a single package. Sometimes, they will ship a single order in three boxes that arrive in different trucks.
But there are 100+ items for other people on the route on each delivery truck each day. So maybe better than individuals driving to the store. If you don't drive to the store that will for sure be better but thats abnormal in america.