This is the part that bothers me most. A lot of small deliveries are convenient and all, but the cost to ship multiple small items (maybe separately) to your door has an impact.
We are currently in a single-serve consumer-focused environment and this takes it a step farther.. potentially a single item shipment environment.
Unless they batch days or a full week, I think this is a bad habit to get in.
I get lots of small deliveries of whatever i need an can spend less time shopping - perfect.