If that's a conspiracy theory, I guess I'm a conspiracy theorist now. "Terrorist" as context in legal wording carries a lot of weight, and can be used to bypass due process. When everyone is legally defined as a terrorist, the powers that be can make anyone, citizen or not, disappear at any given time without any public notation. I can't imagine any legitimate reason for this to be written as law the way it is, there is no "proper" place for a law worded like this to be used outside of a dictatorship.

To my interpretation, this isn't vague at all.