Facebook is supposed to be a platform, rather than a publisher. But recently, they are leaning towards to being a publisher. In that case, it changes the game completely.
If they become a publisher then the only thing that changes is accountability for libel. Publishers are not forced by the government to publish anything they do not wish to publish.
Freeper are confusing the Constitutional right to be free of government laws restricting speech with some imaginary “right to be heard”. You can say whatever you like but it doesn’t mean anyone has to listen, or publish it for you, or allow it on their privately owned forum.