[2] Klein is often confused with Naomi Wolf, an American author who originally rose to prominence as a notable third-wave feminist, with generally centre-left views.

[3][4] The Washington Post's Laura Wagner described the two as both being "White Jewish women" who "published big-idea bestsellers in the '90s" (Wolf wrote The Beauty Myth, Klein No Logo), writing that the two had been casually confused for each other for several years, prior to the publication of Doppelganger.

Kirkus Reviews described the prose as being "tight and urgent, almost breathless" and praised Klein's blend of cultural criticism and biographical research into Wolf's life.

[11] The New Republic published a positive review, describing the story of Klein and Wolf's mistaken identities as being riveting and praising the book for explaining "how so many people have...broken with conventional left-right political affiliations and shared understandings of reality.

[10] The New York Times' Michelle Goldberg wrote that no text "better captures the berserk period we're living through," while Katie Roiphe positively described Klein's hopeful tone.