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.
I thought the content of the topic is really against bitcoin. Anyway, you are right that Facebook is not against bitcoin rather love bitcoin and support cryptocurrency but due to serious matter of scam and using the name of Facebook to scam and steal others effortless, Facebook made it strictly than before. this is good move to eliminate scammers activities through fb.