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.
Facebook is completely loyal to its users, paying special attention to crypto and ICO projects. What can not be said about Twitter, which banned a huge number of participants bounty for PR projects. I think this topic should be raised for public discussion. Everyone has the freedom to choose what and where to publish.
I just heard that twitter suspend some account that promoting ICO, but there are people who just create account and not promote anything but get suspended too. I think their system read something that i don't know what it is but it is probably not because of crypto related account.