Yellow Text - Heroic Bosses

So they added yellow text. Whenever someone defeat any heroic boss, a yellow text announces it. I would understand if it were for the first time, but a guy on my server has been having fun wasting stamina just to polute our screens with yellow messages of him beating every boss one by one... People have been complaining that those messages are, overall, annoying. Why add more?

I think its since they changed the HR boss replays, but i'm not sure if its just 1 msg for a first kill of a boss since the change or that same person will get the announcement tomorrow too.

Have to wait and see if its daily or once off since the change.

Hopefully it is not...