They obviously haven't because we haven't won. I don't know how you can say the defense is doing their jobs when they're ranked in the 70's and we're 2-5.
Because they have provided more than enough stops. Listen, our D is nowhere close to getting us a title, but they have provided more than enough.
NW - Scored 21
Penn St - 23
Iowa - 26
Purdue - 27
Minnesota - 24
Illinois and OSU were awful games, but in those other games a lot of the points they scored had to do with short fields from either offensive or special teams blunders. We knew coming in that teams may score a little, but the hope was that we would rack up a lot of points with Scott's offensive scheme. Essentially if we could score 28 points a game, which in college football is not that many points, we would currently be 6-2. Think about that.
As much as we want to bash on Chins, he got us some stops. Hell even in the OSU game until it snowballed, our D was performing at an OK level.