He went from widely loved self-publishing goldenboy to hated wrong-think wretch back in the 90's.
But looking back, was he right?
In the course of writing Cerebus, Sim expressed opposition to feminism and liberalism. Sim expressed his views on gender in issue #186 of Cerebus, in a text piece as part of the story arc "Reads" (one of four books in the larger "Mothers & Daughters" arc), using the pseudonym Viktor Davis. Among the various theories expounded upon in the piece, Sim's alter-ego Viktor Davis categorizes humanity into metaphorical lights, which tended to reside in biological men, and voids, which tended to be in biological women. He characterized Voids as "without a glimmer of understanding of intellectual processes" and declared that "Light does not Breed".
In 1995, The Comics Journal #174 featured a Bill Willingham caricature of Sim on one of the covers, bearing the title "Dave Sim: Misogynist Guru of Self-Publishers". Inside was a lengthy article written by Jonathan Hagey and Kim Thompson that published responses from comics creators such as Alan Moore, Seth, Rick Veitch, Steve Bissette, and Sim's friend and fellow Canadian Chester Brown. The responses ranged from anger to a belief that Sim was joking. Others would later speculate that Sim was suffering from a mental illness related to his heavy drug use in late 1970s. The article also included a short interview with Sim's ex-wife, wherein she described the essay as evidence of Sim being "very scared". Accompanying the article was an illustration of Sim as a Nazi German concentration camp warden, standing before a gate with the name of his publishing company, with emaciated camp prisoners behind the fence. In the essay in Cerebus #186, Sim characterized fellow self-publishing cartoonist Jeff Smith as an example of a man dominated by his wife. When Smith contested this, Sim accused Smith of lying and challenged Smith to a boxing match, which Smith declined.
In 2001, Sim published another essay, "Tangent", in Cerebus #265 (April 2001). In it, Sim furthered the themes from "Reads", describing the tangent he contends western society has taken due to the widespread acceptance and proliferation of feminism, beginning in 1970. The Comics Journal posted the full essay on its website, although a short introduction by staff distanced the Journal from the ideas therein, calling them "nutty and loathsome". It reprinted a 2001 essay by Renee Stephen, "Masculinity's Last Hope, or Creepily Paranoid Misogynist?: An Open Letter to Dave Sim"
In 2008, Sim sent out a self-written form letter to individuals who had sent him mail, detailing his disagreement with being called a misogynist and disenchantment with what he perceived as a dearth of support in refuting those claims to his character. Contending that society perceived misogynists as the "lowest, subhuman form of life in our society", he mentioned that few, if any, people had defended him, allowing him to be called "the lowest, subhuman form of life in our society with impunity."