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This is basically the argument that Margaret Sullivan makes at the end of the article in question:

Sullivan’s conclusion that the press should take sides put her in conflict with the Washington Post’s editor during the Trump years, Martin Baron. She quotes from an e-mail he sent her: “When we’ve done our work with requisite rigor and thoroughness (also known as solid, objective reporting) we should tell people what we’ve learned and what remains unknown—directly, straightforwardly, unflinchingly—just as people in lots of other professions do when they’re doing their jobs correctly. That’s what ‘objectivity’ was intended to mean when the term was developed for journalism more than a century ago”—that is, when Lippmann wrote “Public Opinion.”

Sullivan’s position is an appeal to the original rationale of the First Amendment. We have a free press in order to protect democracy. When democracy is threatened, reporters and editors and publishers should have an agenda. They should be pro-democracy. Reporters should “stop asking who the winners and losers are,” Sullivan says; they should “start asking who is serving democracy and who is undermining it.” The press is in the game. It has a stake.

Also according to the article she has a "memoir slash manifesto" called “Newsroom Confidential: Lessons (and Worries) from an Ink-Stained Life” (St. Martin’s)

https://www.amazon.com/Newsroom-Confidential-Lessons-Worries...

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