What was the radius of an AFIZ 'back in the day'? As I recall it was 15nm.
Then the MBZs were invented. As I recall, some of them had 15nm radius and some 10nm.
I'm sure the huge volume of airspace covered by an AFIS 'Broadcast Area' of 20nm radius surface to 8,000' gives a lot of people a warm inner glow of increased safety. But what a joke.