Adequately implementing solves one problem (the making up a story because of a grudge), but creates a whole new set of likely much worse problems: how does one maintain a democracy / civil society? It's not just the trust of "social media" that you've eroded, you've almost certainly killed trust in traditional news reporting as well, especially considering just how much of traditional media is discovered via social media.

Effective democracy requires an informed voter base. Society requires its constituents to be invested in its continuity. Neither of those is achievable when we completely discard trust.