Facebook future: Dislike button

So I recently read an article that stated Facebook would be coming out with a dislike button. This would drastically change how we interact with people on social media. I found the idea to be kinda crazy because it would definitely create a negative atmosphere on Facebook intentionally and unintentionally. Zuckerberg, CEO of Facebook, mentioned that it would "let users express other emotions besides the inferred positivity of the Like button" and that "there are times when you may want the simplicity of a one-click response but a "like doesn't feel appropriate". I think that it would be  negative because it might cause users to be insecure of what they post, it could hurt or upset feelings, causing self consciousness and unhealthy behavior that could potentially result in bad actions. Though it would add more of a realistic idea that posts aren't always going to be positive and it's a truth that some might not want to see but it exists.