Does it record a fixed point, or does it do something fancy like using the camera to attempt tracking the user's movement? Just curious, and I don't have access to a modern Mac. The article seems to imply that it's focusing on a fixed point.
No idea, I believe it's just a fixed point. Personally I use it while sitting in front of my Mac about 1-2 feet from my face. I've done tests, it's better than every other form of audio input I have available, including standalone shotgun mic, Airpods Max, Airpods Pro V2, etc.