the idea of emergency granting of powers is redundant however, if the need arises the power will be given, whether granted officially or not. the problem I have with this is that as deac said, it's probably not going to be necessary. As I believe that's the case the probability that it will be used incorrectly, either in this administration or future administrations is much higher than the probability of it being necessary and impactful in the way it was intended.
Actually, I said it is necessary, but will likely never be needed. In other words, a contingency plan for a worst case internet scenario. Personally, I think it would be exceedingly difficult to maintain a large scale cyber attack for any significant length of time.