I think you are missing something. Facebook is a bag of all the worst in society. Voyeurism, stalking, victimization, haughtiness, fear baiting, sniping, trolling, flame warring, disinformation, on and on...
Sure, there is a good use for Facebook, but far too many people in their management seem to want to push the conflict, and seed the sour fruit of a decomposing society. They, and the right wing media, are like flies, eating the corpse and laying their eggs for the future. Facebook has gotten so large, I don't know if it is able to be salvaged. It would require an almost complete replacement of the current management, and real binding repercussions if they backslide into the morass. That's going to take a heck of a lot of balls on politicians and the media. Facebook has made a lot of friends in low places. They make a lot of money pedaling their customers thirst for trash.