Thanks for letting us know that a poster can be banned. With this knowledge, it’s fair to say that Joe has fired-off a warning shot and if it’s not heeded, another poster may soon be banned.
When you block a person, they can no longer invite you to a private message or post to your profile wall. Replies and comments they make will be collapsed/hidden by default. Finally, you'll never receive email notifications about content they create or likes they designate for your content.
Note: if you proceed, you will no longer be following .