I think it has more to do with preventing things from going viral that Mark Zuckerberg doesn't want going viral. The change happened around the time of the 2016 elections when we basically realized we were all talking right over the heads of the media.
Well yeah, that too. They have this whole mythology of “the suppression of conservative ideas”… 🙄
Also known as the pain of "being talked back to directly, and openly contradicted." Narcissists have a real problem with that. They like to spew their bs unchallenged.