As opposed to your neighbors just hold your packages at their place, and you grab them when you get back home? Heck in pre-covid times, that would give you a nice little opportunity to say hi and have a chat with a neighbor.
The failure modes of most IoT stuff are just not worth the "inconvenience" most of them are solving for, especially when it has to do with safety or security things and we know how easily hackable most IoT software is.
That specific example was peak "solution in search of a problem".
Now instead of having your neighbour pick up the package, you can watch them from your garage camera, see them look around your garage for a bit (because of course why wouldn't you), leave, and close the door after them!
The failure modes of most IoT stuff are just not worth the "inconvenience" most of them are solving for, especially when it has to do with safety or security things and we know how easily hackable most IoT software is.