That’s not what he says. Not only does Kahn not say that himself, he’s not even asked about it.
He’s asked, “Why don’t you see your job as: ‘We’ve got to stop Trump?’” And he responds that the role of the media in a healthy democracy is to provide accurate and unbiased reporting, rather than hiding or misrepresenting facts to favor one candidate over an other.
“He says” is not the same as “he says, essentially”.
One is directly reflects what he said, the other injects your interpretation of what he said. It requires the leap of believing that defending democracy is best done by stopping Trump, even if it means abandoning journalistic ethics. He claims that defending democracy requires an impartial media.
To say that he doesn’t want to defend democracy is entirely bullshit. It’s not what he says or implies. He just disagrees with you on how best to do so.