AirVPN has always been as more customizable and advanced in features than other providers. AirVPN seams to target normal / average users that require simplicity (Eddie) as well as power users that want to generate and tune their own configuration files.
Of coruse Wireguard is faster and eats less resources but OpenVPN has some features, for them I hope and think AirVPN will not drop support:
- OpenVPN can run in TCP mode and can be used with http/https proxies, socks4/socks5 proxies (these support UDP too)
- OpenVPN can emulate HTTP(s) traffic and thus run behind corporate office firewalls or more restrictive firewalls.
Other than this Wireguard is faster, easier to deploy and set-up but is UDP only.
Aslo, there are set-ups that work on OpenVPN (even without its TCP functionality) that will take a lot of time to migrate to wireguard. And OpenVPN is actively and well maintained, I don't see a direct awesome reason to drop support for it. just my regular user humble opinion.