It's by design. Every single person associated with this mess, regardless of their roll, is guilty of TREASON and should suffer the consequences, no matter how severe they may be.
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 .