I’m sure some do. In the UK the mainstream logistics and delivery companies are highly automated with almost endless real-time interactive information being pinged between, sender, delivery company and customer, via various pods and apps. The delivery driver’s pod will include at the very least the name of the sending organisation, so even if this is abbreviated most drivers would be aware of the sender and what that company’s business does, and it doesn’t take Einstein to recognise a pack of nappies!
They must deliver lots over the course of the year and for them it’s just another package of far less importance than trying to find an address, keep to schedule, finding somewhere to park-up without blocking the traffic etc.