The problem comes from the asymmetry between the effort that went into generating and judging. You can have one person spinning out documents that can keep a whole team busy and dragging everyone down.
Along the same lines as "A lie travels around the globe while the truth is putting on its shoes."
If the documents they're putting out are bad, then they're doing bad work and that eventually comes with consequences from your coworkers and superiors. If they're doing good work, then great! Who cares if an LLM wrote most of it and they just edit it? That's not super different than the current relationship between senior and line workers.
I guess I'm making some assumptions here. But I've been asked to review some documents before. Maybe I didn't notice the ones that were good. But my general assumption is that if someone gives me the output of an LLM to review, it's not going to be good work. In my experience it hasn't been good work generally.
Along the same lines as "A lie travels around the globe while the truth is putting on its shoes."