This is a huge milestone, and everyone at Garmin who worked on Autoland should be patting themselves on the back, they saved some lives today and will undoubtedly save more. Amazing technology.
That’s not how it works, like at all. Private airports don’t have controllers, and the ones I presume you are thinking of (smaller PUBLIC airports) the controllers are either employed or funded by the FAA.
This is literally the worst part of Gemini. I spent a lot of time trying to figure out if, and if so what, they are training on even with my stupid $250/mo subscription. It's totally opaque.
I am curious what you found complex - was it the PKI? I was able to get Nebula up and running WAY faster than any of the others. It's two (well really only one) binaries and a config file - the simplicity is awesome.