I, too, do not think it is unrealistic or uncalled-for. My sense of 'alarming' is anchored a bit in a historical position--i.e., we've now reached the point in history where an action taken on a computer in a room in some corner of the world can be the trigger for formal war declarations, and is officially recognized as such.

We thought blitzkrieg was a challenge about 75 years ago. This is a huge shift.