currently there is no ladder of force that can be applied to cyber space. as a war fighting and law enforcement function you need to identify the threat (specifically) and use only the force necessary to subdue the suspect or adversary (or risk perfidy and prosecutorial issues). as such jumping straight to kinetics (of any type) likely sounds good to pundits but fails the test for actual governance and law enforcement. since there is no ladder of force an incremental policy starting with the least and working up towards a substantial exercise of prejudicial and nation-state power is a more likely course of action. of course there are a lot assumptions as to the group anonymous and their goals and motivations. there is also an under-lying assumption that they are not a state sponsored group. i'm not sure why if you add cyber state-sponsored gets tossed under the bus so quickly.