If anyone libels you on Facebook, it can no longer say they are just a platform and have not control and do not control content.
The trick is to get the case to an honest judge that is not in the tank for Facebook and the national propaganda machine.
On a related note:
Donald Trump (though pragmatically, Twitter, as they are the platform control) was successfully sued so that he cannot block any followers because of violations of the 1st Amendment. By that token, anyone who’s been banned from Twitter who has not violated First Amendment tenets (no threats, etc.) should be able to sue for the EXACT SAME REASON. Not just for being banned by politicians but ANY reason with regard to first amendment privilege.