I was in the SU Marching Band in Archbold, so we were on that field. I remember there was one season that every single game the field was muddy - even on some game days it wasn't raining, the field was still mud. Maybe someone here remembers the time we quick stepped out onto the field and my plant foot just went out from under me on the slick mud and I landed on my back.
I attended every home game, including the WV game the day after Thanksgiving in a 35-degree downpour. The concrete stadium became a waterfalls cascading down each seating level. Very, very few people attended those games. BTW, we never played at night in those days, unlike with the TV schedules we have now.
Yes, there are some glorious days in September, but season attendance would plummet at SU with an outdoor stadium. BC plays outdoors; did you notice the attendance they got last year for our night game in November? Or in 2016, when Dungey started the fight; it was cold and raw and raining. Barely anyone there for those games. They have a turf field, because it would be a muddy quagmire otherwise.