Faceboot actually prioritizes algorhythms that give people content that angers them. We all know about their algorythms that provide people with things they might be interested in, but it has been revealed recently that if you respond negatively to a post or article you see on Facebook, they give you MORE of that sort of content.
In terms of divisive people are concerned, it is the technocrats, themselves, who are dividing us and not just those who use them. I am a small business owner and when the shutdowns began, I was inundated by leftist covid nazi shit about how all small businesses should be shut down. Now, I know why - it's because Facebook WANTED me to be reading it.
In a weird way, it all makes sense. Motivate people to anger and they respond in strong ways just as they do when motivated my fear. Facebook doesn't care HOW we react, only that we DO react.