I don't understand at all what is the point of the original article.
It's not unprecedented for a coach to give up a big buy out to buy himself an extra year. Jim Harbaugh at Michigan is a great example of this working out great for the coach after 2020. But In most cases, it ends up saving the school a lot of money because the coach ends up getting fired a year later, but to the coach it was worth it because he would rather have the extra year.
But I don't understand how the Mike Gundy situation was any different. It was all a negotiation. Until Gundy took the new deal, OSU would have had to pay the buyout to fire Gundy today, right?