Any future year can be used too, because the policy is now not only to lock them, but delete them entirely, as if they never existed (thus, they will never be "seen").
Surely you jest. They delete them entirely? Moderation on steroids...
At least one, maybe more, were deleted entirely, a policy which I am very much opposed to (to put it mildly).
This is not true as far as I am aware.
It was started by tradephoric, and the OP specifically invited a lock.
Obviously, I can't link to it, because it has "disappeared" (at least for users, maybe not for mods/admin - in which case "deleted" would be an incorrect term).
I think that particular thread was very un-tactful and cringe-worthy, as it made the overall situation worse, and effectively ensured that DST discussion would not continue. At that point, I concluded that having a normal, civilized DST discussion had become fantasy, and decided to quit defending the increasingly indefensible.