and at cruise they are also flying close to coffin corner
typically 40-50kts spread between VLS and MMO, not exactly in any "corner", Airbus says to "respect the stall warning, as it is generated by AOA, not air data, they were in a confusing situation for sure, and at night, in weather, not an enviable position to be in for sure, unless they had struck hail, and unless the radome failed/partially separated, the AOA would have been accurate...