I fully understand your point of view. During all these years, I have suffered several cases of use of these models without my authorization, when the EULA document was perfectly clear about it. But luckily I have also received many requests for legal use. In these cases, I have even sent those who have asked me, a copy of the Blender source files for their modification.
I continue to maintain and pay for the
http://www.alcala-sim.com domain every year, so that these planes are not lost. Why alcala-sim? Because it is derived from Alcalá de Henares, the city where I live.
It took me a lot of time and hard work to make them, I have learned a lot with them, but my time as a developer in X-Plane has already ended a few years ago, when big commercial companies made their breakthrough, and X-Plane became big business. I am an amateur, and the quality of my models, no matter how much effort I made to improve that quality, could never compete with commercial companies such as Carenado or Aerosoft.
Now I want to share them with the Flightgear community, to continue the philosophy for which they were created: Free, and for everyone. If I have to share them, I prefer it to be in an open source and collaborative project like Flightgear.
Regards