Memes

Watch The Social Dilemma on netflix, it will give a better and more compelling argument than an online article explaining it, however, I worked at facebook and I've seen the internal market research around boosting "engagement". They're all playing a zero sum game and know that they're trying to maximize your engagement at the expense of everything else that might possibly be engaging (including other apps, games, media content, and incidentally useful stuff like work and school).