They globally reset the privacy settings for pretty entertaining reasons. Every few years a post goes around saying crazy privacy things that gives you instructions to change your privacy settings to only “share with yourself”. If you’re dumb enough to do it, you basically shadow-ban yourself. If enough people do it, they have to change the settings back because also those same people will complain about their aunt/neighbor/dad/sister whatever not being able to see their posts and have no idea why.