I still disagree. Arbiters of factual information can't be companies, and can't be governments. Currently we don't have a proper arbiter; I would argue that finding one isn't "hard", it's straight-out impossible.

On the same line, who is it up to to decide what does it mean to pursue true knowledge?

I strongly believe that censorship is not the answer- it's not the answer to anything. Let's say you are in a circle of strangers, and one of them starts shouting to the others that you did something horrible. The solution to this problem is not to kill him, but to present a different source of information that can stand more stable than is (ex: I wasn't there at that time, I have history of not doing that kind of stuff, you claim this for your own gain, ...).

The solution to ignorance is not to shut down dissident opinions or theories, as flawed or dangerous as they may be, but to be open to educate.

In this specific instance pertaining to search engines, the correct way to make misinformation available would be to provide appropriate disclaimers with reputable and independent sources, not to censor.