The treatment cold be used to help patients suffering from chronic anxiety due to traumatic events such rape and war. It could also be used by individuals to erase unwanted emotions that result from breakups, failure etc.
I think the treatment is a bad thing. When used on a patient, it deprives them of their ability to cope with undesirable emotions. Besides, therapy can be used to help one to deal with the emotions. Coping with negative emotions helps one build their mental strength. The treatment could also make patients addicted to it because they would lack the willpower to deal with their emotions. Therefore, the treatment should only be used in severe cases.