The book is hyperbolically over-referenced in pop culture, in internet arguments, in OpEd pages, and so forth. I'll grant you that. Chances are, PRISM is not the beginning of a steady march toward a fascist police state. Far from it.
But that's not the point of this article. The author isn't claiming "a 1984esque future" is in the cards. Rather, she's drawing comparisons between a particular aspect of Orwell's concept -- that of linguistic manipulation for political ends -- and the tactics being used in actual politics today. The playbooks are similar.
The fact is, we've sacrificed quite a few of our freedoms in recent decades in service of a vaguely defined "War on Terror," and it's highly disconcerting. It doesn't mean we're ready to put Big Brother in office, and drastic hyperbole to that effect is indeed silly. But it does testify to the power of language to bend a population toward an agenda.