Dumb and pointless? I beg to differ, m'lady, it's the community's way of letting know who they consider their e-mates, crack any appropriate jokes, give thanks and a general boost to board morale.
A shoutie thread can be a high profile member hitting 15k and saying no more than "hi", or it can a lower profile member doing a typical shoutie thread with names and comments that so happens to be at a random number of posts.
I don't wanna make a big deal out of it, but closing a perfectly good shoutie thread for being a bit different than most is rather pointless imo.