I’m far from an expert, but here’s my two cents.
ND was running those double inside blitzes in 2021 under Freeman. That’s a Freeman thing as is everything you see on defense IMO. Its his show.
Blitzes are often times going to get picked up unless you’re playing Cover 0 where you’re rushing more than they have to block. The offense’s objective is to block everyone or get the ball out (obviously). Do you remember that long crossing pattern that was completed by CMU? That was an 8 man pass protection against 6 blitzers. Not much of a chance and it took a great throw right past the defender to make it happen. I suppose you want someone to win 1 on 1 but 8 against 6 is good for the offense.
Sometimes the results don’t matter as much as the process. Its about being sound. If you get pressure, but leave a rush lane for the QB to escape, is that good defense? Check the play at 9:21 of the 1st quarter against NC State. ND gets a free rusher but they leave a huge lane for the QB to escape when they’re playing man coverage. They’re lucky Armstrong didn’t run it. It should have been a first down.
Obviously you want to make plays, but you’re also at the mercy of the offense’s execution. Hinish had a QB pressure. That was a blown assignment by the CMU player. That big hit Harper had that caused a fumble? The WR was stalk blocking while the QB was waiting to throw a pass. He probably should have just chucked it over his head. Two mess ups by CMU result in a big hit and near turnover.
None of what I’m saying is to imply that I’m happy with the blitzing situation or the defense.