Yes, Zuckerberg and his team have effectively withdrawn from China. They spent years trying to come to an agreement with the Chinese government, but could never find consensus. They opened up a dev shop in China, only to have the mandatory government license revoked some time later. Facebook has also instituted internal policies forbidding hosting data centers in countries with records of human rights abuses, although admittedly I haven't been able to verify whether they stick to that. It's not farfetched to see that Facebook missed out on tens to hundreds of billions in potential revenue, hence skin in the game.
Per Reuters[0]:
> Zuckerberg effectively closed the door to China in March [2019], when he announced his plan to pivot Facebook toward more private forms of communication and pledged not to build data centers in countries with “a track record of violating human rights like privacy or freedom of expression.”
Per Reuters[0]:
> Zuckerberg effectively closed the door to China in March [2019], when he announced his plan to pivot Facebook toward more private forms of communication and pledged not to build data centers in countries with “a track record of violating human rights like privacy or freedom of expression.”
[0] https://www.reuters.com/article/us-facebook-zuckerberg-idUSK...