Was it an official statement by facebook or just some social media fake news? I don't think facebook would do that. They are earning profits from advertisement traffic and they have no issue at all with bitcoin. Just my opinion.
I think people will gradually move away from Facebook as censors and their parenting country's ideas have essentially ruined what is a useful tool.
That is a pretty strong step from Facebook, but they have a history of making hasty and unpopular decisions.