Hi Chris Scott,
although the vertical component of its trajectory is (say) 10,800ft/min (180ft/s, or just over 100kts TAS), the pitot tube is at more than 90 degrees to that.
I completely agree. So why would you want to turn off the stall warning when stalled like that?
The 60 kt logic is to prevent false warnings on the ground when the AoA vanes could take up any random position at low speed. Why keep the 60 kt logic when airborne?