The package is there but I found out only after downloading manually.
$ apt-cache showpkg airspy
All the common packages (piaware, gpsd, ntp, …) have their corresponding service file and default configuration file included so why not this one. I am sure you agree that googling for additional files in a forum, copying them in a new file is not the most straightforward way of installing a program. Yes the user should have the choice whether to enable the service during startup. Just as i.e. GPSD.