I'm completely guessing here but as ACB takes the stance of originalism, it doesn't seem like much of a stretch for her to look at the DMCA's ability to silence

I'm completely guessing here but as ACB takes the stance of originalism, it doesn't seem like much of a stretch for her to look at the DMCA's ability to silence people talking about how to break DRM as a blatant disregard for the for the First Amendment.