If I remember my spin training AOA breaking would be the first indication that you have broken the stall, isn't that a good thing? The AOA guage is simply a visual cue to confirm your tactile feel.

What cardio is arguing is a chicken and the egg, he doesn't think they are useful because no one is trained on them. No one is trained on them because they aren't widely available. I am sure Wilbur and Orville had a similar discussion on the benefit of a slip indictor. What do I need that string for? That is essentially what AOA is is a slip indicator in another axis.