It seems that you did not understand well what I wrote, so it seems that you made a completely wrong comment here. A certain group (several of them) of members can still write in such threads, while everyone else can only read.
Ahhh, I got the point but before did not get the intentions, which was basically about why administrations can post there, instead I got the context that you are interested to know why we (normal members) can't post in that thread. Sorry for the inconvenience, as I take another meaning of your post. Well, considering your intention, I must say that's not right. As not only the administration has done KYC and earned KYC badges. Many others also have done that.
But how do you so sure that only the administration can post there, as I can see only mods have posted there which almost proves your statement, but it can be a case that only those can post there who got KYC badge, but only some members made reply on this thread, and it happens to be a coincidence that all those members are mods, or linked to administration. Just a thought.
But if this is not the case, and really administration can post there then I don't think there is a need to make such thread publically available. But I think they don't have the feature to hide thread yet.