I wonder if person X in dyna-Jeuno is a botter or if they are slightly autistic that they can farm that zone 24/7.
Pro-tip for dealing with RMT in Dyna-Jueno!
If your RMT are like my RMT, they farm the NMs for a bijou and then immediately head to the Goblin Golem NM while training normal mobs in the process. Popping the NM gives Confrontational status, which makes all the mobs de-aggro and despawn.
All you need to do is get a pop item, wait for the RMT to run to the ???, and pop it before they do. Don't kill the NM. The RMT then runs in circles around the zone, wanting to pop the NM so they lose aggro. But you won't kill the NM, so they run in circles until they die.