Although you're being facetious, AoA sensors do have self-diagnostics that determine when their heating elements have failed.
Incodentally on the A380 and A350 Airbus have changed to combined AoA-pitot sensors of which there are now four.
Sounds like Airbus airplanes are much, much safer to fly on than Boeings. Why would anyone trust a company which thinks it's OK to have a flight control system that only uses input from a single sensor that's known to fail?