Also you don't have the right to speak the way you feel no matter what platform.

A newspaper doesn't have to publish your words. Facebook doesn't have to allow your post.

You only have the right to speak freely. Not post stuff on private platforms. You also do not have the right to freely speak your mind and be immune from consequences. Only consequences you are immune from are those by the government. Other private citizens and organizations can still shun you or rebuke you.