I'll buy that about some, but not not all. For many the sensitivity is fake. They are smart enough to feign it and empathy--it's part of the manipulation. I believe there are definitely some on the less extreme portion of the spectrum that your belief fits. There is a concept that has been described to me as an empath going supernova. When an empath is overexposed to a narcissist they start to pick up the narcs traits and/or the negative energy of the narc's that they absorb and don't know how to shield themselves from causes them to implode and become a narc themselves.