It promises a quick fix avoiding the painful and time consuming task of allowing a traumatic experience that the mind dissociated to play through until it is resolved into memory.
It may have a place as a coping mechanism, but this isn't a cure.
Well, it is presently saving lives big time. Actually, God is the cure...but this simple technique opens the God door in the mind...so that is why I put cure in the title. I am living proof that it works.