Yeah, but i guess it's just used in "servers to play on" forums because when their "Community" or "server" gets closed they just edit their posts and write those things. Still EDITING of posts must be allowed because there are many "communities" and "Servers" who want to update their topics and they are not dead/going to die.
It was stated that if you want to change your topic you must PM a moderator/administrator with the changes you want to apply and they will do it.