Awesome thoughts. You make dinner great points about social media having negative effects on the people. With people being so reactionary by nature, it's incredulous to give social media platforms the ability to actively manipulate mass populations. Even when we're aware that it's happening, it still leaves impressions on us, making it more difficult to make decisions that are not influenced by impressioned biases.
With the new policies rolling out on FB, I can see some pretty grotesque shifts coming. There may well be a shift coming due to the malevolent nature of the platform and the desire to censor or manipulate what people see for their gain.