It could be. Although we don’t know how much those sounds indicate distress, and perhaps watering should happen much sooner.
Imagine if aliens abduct you and give you food only when your stomach makes the kind of noise it makes after three days without eating anything, because “that’s all they can detect.”
Well hence they will work out when the plant (or human in your example) is really starving.
We’ve already established that. But that method will shorten the life of the plant (and human.)
I dunno, calorie restrictions has tended to lengthen lifespan in other organisms we’ve tried it on.