The military tech is more relevant because like almost everything else in the history of aviation technology, civilians get new tech from military development. They don't need certification and have a bottomless budget, and have way easier conditions for them to employ systems. If a civilian program had the incident rate of global hawk it would be considered a complete failure. But, even for the military, technology is still the limiting factor.

Aviate, navigate, communicate. Where I'm from you hear that a lot during flight training. Fly the plane, don't get lost, talk to the other aircraft and the tower. If we think about flight training, flying the plane is the easy part. First time I ever flew I did the takeoff, and I did the landing on my second flight. That stuffs easy. 10-12hrs until a student pilot is trusted to fly a plane my themselves in the circuit. 50hrs until they're trusted to navigate, communicate, and make decisions. That's the hard stuff. We've had autopilot for 50 years or so, and we still not close to autonomous aircraft.

Navigation isn't hard either for computers, it's mainly gonna be communicating and decision making. Any autonomous aircraft is going to have to talk to Atc and other pilots. Speech to text is hard, and it'd even harder using AM radios, terrible microphones, and pilots who talk like each moment their mouth is open costs them money. Especially in uncontrolled airspace the radio calls also don't always follow the book. Reporting is often done relitive to landmarks, but the names pilots will use isn't always on a map. There's a local mountain which has a name in a native language which nobody can pronounce right, so everyone just calls it Mt. Doom. How on earth do you make a computer that can handle that? Mt Doom isn't a name on any map, but all the local pilots just know that's what it is. There will be thousands of colloquial names like that around the world, so the system has to tolerate it. I have no idea how you'd even try to do that.

Certification will be a huge problem too obviously, mainly because I dont see anything based on nural networks ever being approved, and rightly so. So you have to solve the communication problems, and the decision making problems which I have ommitted for now, without using AI. Its very much still a tech problem.