Some people come to Google, and go past the Fox News result, and seem happy with the CNN result, or NYT, or WP, so Google thinks they're awesome.
And if Fox News viewers think Google is biased, and then avoid Google, then Google will become more biased. It's a vicious cycle, or virtuous cycle, depending on how you look at it.
I get where you're coming from, but if you're not a card-carrying progressive then this statement feels egregiously false. The Washington Post was at the forefront of the Covington debacle. NYT pushes editorials about how mixed race dating is bad (from a "woke" perspective), among other crazy, far-left ideology.
What gets me about this whole subject is that everyone I know who watches Fox News knows that they're watching partisan spin, even the elderly ones. It's kind of a theater of overblown, right wing outrage that they're willing participants in. Most people I know who watch CNN think that it's objective, which couldn't be further from the truth.