The excerpts from Michael Wolff’s “Fire and Fury” that began to run in early January read like a strychnine cocktail. President Donald Trump excoriated his former chief strategist, Stephen K. Bannon, who had talked extensively and intemperately for the book, and became notably hysterical, even for him, on Twitter. Readers dissected the available tidbits so passionately that Wolff’s publishers pushed up the date the tell-all would arrive in stores.