Facebook is not against Bitcoin but rather intends to avoid the situation of misleading its community members through its paid advertisement. Users of facebook can post crypto and Bitcoin related topics on facebook without any penalty.
yes I agree with you Facebook just wants to protect users from cryptocurrency fraud. because now there are too many ICOs and most ICOs are scam. so that Facebook does not want its users to be deceived by ICO who scam and I have also read an article that the founder of Facebook will create crypto coins themselves. let's wait if Facebook will properly establish crypto itself.