It seems to me that we have a significant divergence of goals between many opinions posted on a free message board and Matt Campbell. Admittedly Matt has different goals than most head coaches whose goals (championships and records) more consistent with those posted by free message board members.
I have heard Matt say that he wants to develop young men into the best man, husband, and father they could be; more than once. I have not heard him say he wants to play in the Play-offs every year. I have not heard Matt say that Notre Dame and Ohio State were his dream jobs but I have heard him say that his coaching idol coached many, many years in Div III (?) and that guy was immensely successful as evidenced by the life-successes of that guy's players.
Matt may be interested in the Notre Dame job but, if he is, I'm sure that mega bucks is not his lead concern. Matt would also want an AD and Administration that shared his values and goals. Frankly I could see a little problem there because if a recruit was focused on how much NIL he could get, Matt would not get in a bidding war for the recruit's services and would not regret the decision.
I think if you gave Matt a choice to chase a hundred dollar bill blowing in the wind or go talk to a former player whose wife has just had a baby, he'd take the former player every time and I think he will approach any job opportunities the same way.