It's valuable if you care about transmitting. Sure you can transmit under part 15 or other unlicensed transmission rules, but you have to maintain extremely low

It's valuable if you care about transmitting. Sure you can transmit under part 15 or other unlicensed transmission rules, but you have to maintain extremely low power that is typically not very useful for communication. On PO Boxes, I don't think it does much to thwart a person looking for your address. It's one single barrier, but anyone can find anyone's legal mailing address via whitepages/public record using only a name and location.