Well, the thread is pinned for a start, so I saw it at the top of the threads board, and since I didn’t see a deadline and 2018 was in the title I assumed it was still open.
If there was some indication that the collab had closed, I didn’t see it.
Forgive me if I’m wrong, but you were also looking for this specific thread just to comment that it should be closed. For all intents and purposes, it was. No one was talking here, the current collaboration thread is pinned, and most people don’t dive deep into a list of dead threads anyways.
But hey, now you got people talking here again, so congratulations I guess?