With the amount of threads we close, you cannot expect us to message each thread owner or wtv about the reason the thread was closed. This said, we sometimes close multiple threads at once, specially in critical areas such as naruto media, making the act of posting in the thread to explain why it was closed quite counterproductive. If you feel strongly about it, ask one of the mods that moderates the area the thread is in and he will tell you if he has the time. But bare in mind that 98% of the time, the reason a thread was closed is easily noticeable and generally falls under the following:
-Same thread was made before.
-Spam in the thread beyond the reasonable controllable level.
-Thread became filled with trolling or flaming posts.
-Threads purpose was accomplished and there was no point in leaving it open any longer.
-Generic rule breaking.
Also, just a reminder, we don't close threads "just because". Closing a thread always has a reason.