I'm not super bothered much by it either. However, there is data to show, through Facebook's own research, that is possible to manipulate people's sense of well

I'm not super bothered much by it either. However, there is data to show, through Facebook's own research, that is possible to manipulate people's sense of well being and their perspective by what is being shown to them. For example, Facebook could show a person only posts from their friends expressing negative sentiment and put you in a bad mood. Although these algorithms are quite sophisticated, there is no universally accepted heuristic for what is ideal for somebody to see. For example, let's say your friends have broad political leanings but you lean left. Should the algorithm only show you left leaning political posts because that's what you like, or should it optimize for you engaging with a broader variety of content but maybe increase your dissatisfaction. I think these are very difficult questions to answer. Another issue is that people are very biased towards believing what is put in front of them. If your mind sees a pattern, it starts attributing truth to that pattern. This idea that you should just see all the facts and then "you decide" is a cop-out in my opinion -- your mind will have decided before you were ever able to apply rational thought to something. Most people are used to seeing filtered information that has been vetted (newspapers, textbooks, teachers, experts, etc.), and the age of social media presents a problem insofar as this filter does not exist or exists in the court of public perception or algorithms. You can see evidence of this in that there are otherwise rational people who are being easily tricked into believing these whacky conspiracy theories and fake news, as you point out. I think that's a pretty big problem with serious societal repercussions.