I agree, along with considering the relatively small size (eliteist) type private school that it is.
ND hasn't anywhere near the stature and weight it once carried in the US, parallel to the causal related Catholic religion, which has continued its general decrease and, let's just say, significance it once possessed in this country.
As a 100% Italian, raised strict Roman Catholic, I'm opining from my circle/experiences of familia, etc. Most of my elder relatives, etc., including my today 95 year old dad, were/are huge ND fans, strictly due to its Catholic identity, ties, etc. However, this affiliation, interest, etc. doesn't exist anywhere close to the same degree with my generation of relatives, and certainly not with the younger.
Being a relatively small private, along with the mentioned general decrease in the Catholic significance, et al, I imagine moving forward, ND's noteworthiness overall will likely only continue to fade as well in the general realm.