Here's why I disagree. If one-on-one violence, even if it inadvertently threatens the safety of others, is called terroristic, what shall we call acts which are assymetrical, one (or few) on many, and designed precisely to obstruct commerce and limit the exercise of freedoms by making people afraid?
We already have aggravated assault for acts like the one described. The problem with language inflation is that it impoverishes those who rely on language, which would be most of us ... okay, except democrats.