I don’t know if this makes sense but I imagine uploading artworks whole month and then deciding to go back and say “ok, I guess this was my monthly masterpiece, because I haven’t done anything better” or the other way around “I thought this was my monthly masterpiece but I made something better now so I need to remove that tag and apply it to the new one”. Would make sense if such function would work only for current month pieces, and then be blocked for them after new month has started.