In Michael Wolff's book Fire and Fury: Inside the Trump White House, Miller was described as a "a fifty-five-year-old trapped in a thirty-two-year-old's body"; Wolff noted that "other than being a far-right conservative, it was unclear what particular abilities accompanied Miller's views. He was supposed to be a speechwriter, but if so, he seemed restricted to bullet points and unable to construct sentences. He was supposed to be a policy adviser but knew little about policy.