You know those threads where someone says something clever and then everyone else responds with the same thing or some variation? Do you like those/know any? I love reading them bc they always make me laugh.
Unless your interpretation of "not allowed" is "literally cannot exist on the server," (and even then, I disagree with that interpretation) then I see no reason to delete the thread.
I use to always wonder why Ace accused Josh of spamming threads and wanted to ban him from making them, but I've really seen why.
Like does everything you think of need some sort of a thread. A dozen threads a day is literally overboard.