While I wouldn't be surprised if what the person alleges is true, before I trust them I need to know why they are no longer an employee.
They might be vested or tenured. So that would mean re-assignment and no promotion.
"Never Trust Government" -- Smart people. "The Great thing we should Fear and the Weird Thing we Trust is Elon Musk" -- Me "You can be broke but you cant be poor." -- Ruthie-May Webster