Wouldn't delivery be done by quadcopter drones? There have already been pilots projects where Amazon does delivery by drone in a couple of places. I don't think they were a success, but an airship adds some constraints that might make the more viable. Downside is the copters needs to return to whatever altitude the ship is currently cruising at, which might be close to their ceiling.
But on a side note my first reaction to the headline of this article was "no they are not". Airships have a number of fundamental drawbacks that I don't think we are any closer to solving. Ultimately they're as slow as a cargo ship, can only carry a relatively small and light payload like an airplane, require specialized ports like ships and airplanes, and are expensive to build and operate. They just don't have a viable niche.
