Service selection and carrier terms define what happens in the case of theft. The carrier is responsible up to a specified or insured amount while in its possession. As TeamSpeed wrote, requiring a delivery signature ensures the correct party gets a package. But when the recipient signs a release, it becomes his own problem. In most other cases the delivery is fulfilled and becomes “yours” once the package is left at your door, lobby, office, porch, etc.
It does not make sense to hold Adorama or any shipper responsible if a buyer specifies home delivery, but cannot be there to receive it, does not have a safe location, or does not designate someone else to be there. “Too busy” to receive a package is your own problem. “Not safe to leave on porch” is also your own problem. Get a family member or neighbor to be there. Specify a business address or move to a safer neighborhood. The last one is facetious, but choosing where you live is not. Everyone who works outside the home has the same issues. Adorama has no control over where you live.
If you are a professional photographer, get a business address, hire staff and have business hours. There are legitimate complaints about shippers and carriers, but being too busy to receive your own deliveries is not one of them.