But you mentioned something else in your scenerio. You mentioned wind gusts. Please explain why an instructor would select a day with gusty conditions to practice low approaches. And please explain how this is not poor judgement and unlitmately not the fault of the instuctor.
Where I live, if you only instruct on calm days you'd have maybe five days a year to teach somebody to fly. Part of what we teach people is flying in the wind.
Buddy cords are a good thing, but they're not as good as real dual controls because you don't have the stick moving when the student is flying. So when something does go wrong, you first have to see it and then respond, and you're responding with your stick(s) starting from neutral. I suppose if you jump in the minute something looks like it might go awry you could keep a student from ever crashing. But I don't consider that kind of over-cautious instruction desirable. I like to let my students get into a little trouble and get themselves out, if they can. It's not that I crash a lot, but sometimes I do, and I don't feel that bad about it: it happens.