Biggest thing to me that seems to have gotten ignored/lost probably due to sheer frustration by some fans after the three loss streak of Minnesota/Indiana/Purdue was just how terrible the pass protection was. It was bad most of the season. It got a little bit better around the Wisconsin game (as did run blocking) but still probably graded out as a D or maybe C- for the year on the whole in my opinion.
If Adrian comes back 100% healthy next year but the pass blocking still sucks, we'll probably see similar results but as
@Cdog923 alluded to, many will parrot the narrative they believe to be true.