If the head coaching job at nd is so difficult and restrictions so bad then why

When every coach in my lifetime has left ..they have done worse or maybe the same...faust mediocre ...holtz took a rebuild thats different..davie sucked...ty sucked..weis sucked..kelly is self destructing but with a tougher schedule.. heck nd might have propped up some of these guys..this you cant win at nd stuff is so played out..when a coach leaves then lights it up somewhere else il buy into that nonsense.. the media is so full of excrement