Just a reminder that way back, I did a test with an airline type AOA vane using the hand out the window trick in my car. It came alive at less than 20 mph!
They really don't take much wind speed to activate. 60 Knots might relate to reliable airspeed measurement issues. The key issue is that AOA data is valid in its own right and should never be controlled by airspeed as to whether it is considered valid.
As we see with AF447, they had well over 100 knots airspeed on the way down, it just wasn't being directed into the pitot tubes.
