Even when they did call them in '22 you often had situations like an overload on the right but the back blocks to the left. Lots of situations that year where Nebraska had enough blockers but they were still getting free rushers. Last year the entire operation was much cleaner.
There is still a long ways to go, though. Nebraska gave up a sack on 10% of pass attempts, ranking about 121 out of 133 teams. A lot of that is because we really only passed the ball when we had to, usually in poor down and distance situations and obviously the revolving door of QBs isn't going to help that situation. A competent passer, and much more reliance on the quick game, will drastically improve that metric.