Misleading title. Google Drive bans *sharing* "Misleading Content," which means they can disable sharing if a doc containing blatant misinformation starts to be widely shared on other platforms. (Edit: This doesn't mean they'll go into your drive and remove doubleplusungood content)
Google Drive is now widely used as a social media platform -- I even get spam from google drive share notifications now! And so I'm sure they will stumble in all the ways that all the platforms do around content moderation.