Official updates/patches and releases are infact normally posted as a stickies.
It would be counter productive to disallow members/users to post responses about such updates. Discussion is after all, is the purpose of a forum. But I'd agree that rubber-stamp comments and inane drivel can uneccessarily stretch threads which can make sifting through Search results a little tiresome.
I bookmark certain posts, which can be quite useful.
Bookmarks