Remember the former Facebook executive who tried to smear the #fediverse into acting more like Facebook (and thereby undermining it's differentiators)?
Well, his outfit was disbanded after facing three defamation lawsuits. This wasn't the only instance where they tried to smear someone though, they also tried to smear Parler and Stability AI, who both happen to be Facebook's competitors.
Some might not like Parler because they're conservative, or because they lie about actually having free speech, however, it is alarming how Facebook might try to assassinate the reputation of a competing service.
https://www.huffpost.com/entry/facebook-meta-tiktok-targeted-victory_n_62446838e4b0742dfa59f045 Facebook also smeared TikTok.
I honestly can't say I'm surprised someone would sue him for defamation as he would often present things in a misleading (or hypocritical) fashion.