but never in 40 years have I
ever heard of an 'undue' stall warning....
BEagle, an "undue"stall warning is indeed a real occurence. I flew a lot of L-19 (Birddog) tows (5000 plus) and the stall warning buzzer would regularily go off in turbulence, such as, for example, 15 kn wind and strong thermal conditions. Maintaining attitude always got us (glider and self) through this.
Similarily, when towing through a rotor in mountain wave conditions would cause the same.