I have no idea why any front end would choose to display whether or not an account is on some centralized blacklist or not. Perhaps it could be useful if accesses by community moderators on posts/comments made within their community as some form of assistance in determining if a user is a spammer/troll/bot or not. But to apply it across all comments/posts is just stupid. Poor choice by both peakd/steempeak and steemit/hive.blog to include that in their UI.