Yes, General WWE is used for older topics as well.
Plus, I don't think it'd work well. If I saw a topic in General WWE dealing with something that happened a long time ago, I might peak in there, maybe even give a reply if I feel like it, but I wouldn't go into a seperate section just for older topics, since I come into the wrestling section to discuss the current stuff. I'm guessing most people are like that as well.