i'm not saying the concept is novel, i'm saying that it's the only viable option for the systems of today. related to that, i think the qubes approach will be adopted eventually (and that articles of hers, specifically, that i've read will likely come into fashion, despite the--dare i say it--borderline sexist reaction many on hn seem to have to "her tone").
regarding outright original thought, i'm sure both she and he are guilty of it. probably you and i as well; it's easier than a lot of people think. the world is large and complex, and really most of the "oh my god i can't believe [person] thought of [amazing idea]!" really ought to be marveling at the fact that [person] implemented [amazing idea] as a practical tool.
sure, we rehash over and over in our thought, but the world of ideas is so specialized that given even a few months of serious study, novelty is not particularly impressive.