Football may be a small portion of his job as far as day to day work, but football is the primary source of revenue that keeps the rest of the job running. I'm proud of our gymnastics, and women's volleyball, and track and field. I want all of our athletes competing at a high level. They are able to do so, because of the facilities and coaching staffs paid for with revenue generated mainly by football, or donations motivated by football, or licensed merch purchased because of football.
If the football money dries up, so does the entire department. So, of course he was brought in to fix the football program. Everything else he does depends on it.