Why do you people think threads are locked? They are locked when they go offtopic for good, when they turn too hostile, when the topic has expired (such as a birthday thread somebody digs up a month too late), or they broke the rules in whatever way. Sometimes they are also locked if the OP requested it.

They aren't locked because somebody random thinks the thread is useless. This thread is probably that since the spoiler rules are about as likely to change as North Korea adopting democracy any time soon, but if this clears the situation in DE's mind, then why not? Even if things aren't likely to change, there's nothing bad about challenging them in a civilized manner. A forum is nothing without active members.