Well maybe they wouldn't get beat down if they stopped making accounts just to post a few insignificant things and then come up with some major news update that they are leaving.
It would be a different story if someone like you, lokiloki, or even someone like eliteelio decided to leave. I'm sure everyone would care and be curious as to why you are leaving, because I would definitely be curious. But when someone is practically unknown, there is not even a point in announcing the fact that you will no longer participate on a forum.
For example, if I were to discontinue using this forum, I wouldn't make a thread about it, as I am insignificant. At the most, I would PM the few friends I have made from being a member of this board or post a simple message in my signature with something like "I no longer use WJunction. Bye."