This command has been around for a while and has just been a big mess. I don't think there's any point for even having it anymore as it just pops up in chat once in a while and nothing else, as well as this it confuses new players.
Support, For new players it’s annoying that the challenges are broken, so I think we are better of without them
I understand why you would want to get these removed, its bugs make it confusing for players both new and all. However, once you figure them out its great way for newer players to get resources (particularly the Grass blocks). I would prefer to see these fixed rather then removed completely. No support sorry