As a total outsider following this from a distance, I sort of feel for Facebook and other social media platforms facing this problem -- they've run up against a

As a total outsider following this from a distance, I sort of feel for Facebook and other social media platforms facing this problem -- they've run up against a fundamental issue for which there doesn't seem to be any satisfying solution. Misinformation and propaganda are rampant on their platforms definitely, and echo chambers that reinforce divisive worldviews have probably deepened real societal divisions, but how do you actually implement a policy to stop this? What is "propaganda"? What is "misinformation"? The entire core of Facebook's existence is advertising, which means user engagement and reach is the only thing that drives your bottom line; they want to drive users to Facebook and keep them there, and keep them engaged. They've just happened to discover a universal human truth along the way, which is that people like feeling validated, and people like being a member of a tribe. Facebook is the way it is because thats what users want, whether they will admit to it or not. Anything that Facebook does will be perceived as making a political and/or moral statement, which they obviously are trying very hard not to do, because as soon as you take a position you alienate half of the population (at least in the US). They've apparently decided to go the route of burying their heads in the sand instead of trying to make things less tribal and divisive, which in all honesty is a pretty understandable position to take, and yet even while actively trying not to piss off conservatives they have still landed in hot water over perceived favoritism towards the left. They are damned if they do and damned if they don't. So honestly, what is the proposed solution here? What would you do if you were in Zuckerberg's shoes? Do you campaign for regulations that take this issue off of your hands but that let the government call the shots somehow? Do you look at your board members with a straight face and tell them you're going to tank user engagement for some higher, squishy moral purpose for which there is no clear payoff?