You're entirely correct -- I am not denying Facebook the company has strong political leanings, or that it doesn't, shall we say, "influence" its fact checkers.

You're entirely correct -- I am not denying Facebook the company has strong political leanings, or that it doesn't, shall we say, "influence" its fact checkers. But in this particular case, the lab-leak theory, traditional media was so aggressive in shutting it down and "confirming" its falsehood (despite not having any actual facts or evidence), that Facebook really had no choice.