Crab,
Yes, the idea WAS of course to make a pilot aware of the ASI (I used to teach it myself in a later life - both rotary and fixed wing). I'm certain we are just talking about the phenomenon known as windshear.
This "inertia effect" can be understood more easily by considering extremes (now there's a good CFS technique). At one end of the scale a fully laden 747 is very prone to the danger of windshear at low IAS because of it's very large inertia. On the other hand, a tiny insect has absolutely no problem with maintaining airspeed because it "goes with the flow" due to it's miniscule inertia. Tiny insects probably never suffer from the danger of turbulence induced structural failure either - they just go up and down (and round and round) with the peaks and troughs....
Always an interesting discussion.