Ha, I know it's unusual that I agree with anybody on anything, but I was agreeing with you.
From NDSU history, I know Phil Hansen was listed as a DT, but it didn't seem like he always lined up inside.
Looking at other MVFC programs, teams do have some larger DEs - for example, Teddy Corwin for Illinois State is a helluva player. That said, NDSU's defense is the gold standard which other teams hope to emulate - not the other way around.