LLMs simply aren't capable of the precision required for most jobs. But it could attend meetings, write up tasks for human employees, assign tasks, make timelines, put together a project plan presentation.
So yeah it's basically middle management that are most in danger of being replaced by AI. Sure there'd some inaccuracies tasks getting assigned to the wrong eomployee, a task description being wrong or unclear, but all of that happens now with human middle managers now. So having AI do middle management is probably already feasible.
But what is likelihood of management recommending their jobs be replaced?