I see a lot of comments misinterpreting this. First, it's not about private files, it's about distributing content. Google isn't spying on your private files, but does scan them when you share them publicly. E.g. keep all the pirated movies you want on your Drive, and even give private access to friends, but the moment you make them publicly viewable Google scans them and limits access accordingly. So no, this isn't…
You cannot have true democracy if people cannot disagree with their governments, they must be able to disagree with any truth or opinion such a government might consider self-evident, just on the off chance they're right.
I should at this point note that Google doesn't directly claim to go quite that far in preventing misinformation, they mostly claim to disallow things that could harm the democractic process (e.g. telling people to vote at the wrong place, their candidate has died, etc.). At least that kind of information is usually agreed upon (if not there are bigger problems than mere misinformation), though they seem to try to include claims of voter-fraud, which is a bit dangerous.