I have no idea why any front end would choose to display whether or not an account is on some centralized blacklist or not.
"Some centralized blacklist".
That there says everything about it. It's not a community ran centralized blacklist, it's some centralized list.
You know what else is centralized? The stupidity here:
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.