If you want, I can give you the name of the doctor with a PhD in Plant Molecular Physiology with an emphasis on plant senescence who made the claim and you can write him and ask for him to cite his research. Will you post it here if you do?
To me, it made enough sense to change my mind about it. You've got guys cutting lights for 72 hours, revegging for a week before harvest, throwing ice, etc., yet stressing the plant out by making it realize its life is about to end sounds like complete nonsense, right?