Actually, I didn't.
Having a vague law is a very bad idea since it's too easy to run afoul of it. The phrase "appears to be intended...." opens up a can of worms, such that gov't can use it to apply to a wide spectrum of crimes.
This vagueness allows the gov't to charge a defendant, and use that charge to get them to plead guilty to lesser crimes to avoid the chance of a jury convicting them of "terrorism".
Also, another intent of vague laws is to instill fear into the populace.