However, recovery from a stall requires:
1. reduce AoA, and
2. regain airspeed
Training emphasis has recently shifted towards the first, and I miss that in his post.
Adding power to regain airspeed is NOT the way to recover from a stall.
Underwing engines will create a pitch up force when power is added so it is essential to get the nose down FIRST before making matters worse by adding power.
Once the wing has been unloaded and the AoA is correct power can be added
carefully to regain speed or minimise loss of altitude.