When google was just an excellent database index and relevance ranker, then it was ok for its results to simply reflect the underlying data. If the internet is racist, then looking up things on the internet will find racist things.
As time goes on and google purports to give answers and facts and gets more information-ey, they're kinda taking an editorial stance that the results aren't simply relevant webpages, but correct answers in some loose sense. When google tells me the Eiffel tower is 984' tall, and 1063' to the tip, they are endorsing that as The Right Answer. Endorsements come with responsibility.
As Google pushes to give correct answers, and people increasingly expect it, it's an endorsement of search results that comes with responsibility to not just reflect the huge corpus that is the internet.