Some recent config updating led to communication with Azire and some new info.
On the Azire server-status page: their incoming/outgoing numbers are not like Air's. At Azire they are upload/download from the customer, so they are usually very different with outgoing (customer download) dominating. Also, they are in transition to a new back-end management system, and the status page reflects only the part of the system that has made that transition, so it may be awhile before it's fully accurate.
Azire has also introduced an iOS app. The link on Azire's install page took my phone right to it, in the App store, but an App store search wouldn't find it for me. Intentional?
They have also revised the install procedure for those routers, etc, that require creating config files on the Azire website. The new system allows up to 10 "devices," which seem to function like Air devices in that this is where user public keys are kept. it is possible to delete old devices to make room for new, which means they do not need to have wireguard key registrations expire on their own after several weeks of nonuse as before, which was always my big complaint about Azire. I haven't tested this nonexpiration conjecture yet, so YMMV. Azire's device system is still a bit raw, with devices identified not by names like at Air but by the interface IP addresses 10.X.Y.Z assigned to them. So it's not really a system for technical beginners.
Overall, Air easily remains my favorite VPN service. I'd call Azire and Mullvad tied for my number two, with Mullvad winning for ease of use and a super-private registration scheme and Azire easily winning (over Mullvad, not Air) on server speed and reliability,