It's not a coincidence you used the Northwestern and App State games as examples of games that people have overreacted to. They were either the last game for a long time or the first game in a long time. When you have that much time between games people are going to talk and overanalyze because there are no games in the interim. A huge reason expectations were so high to begin with was because of the performance in the bowl game, which was just a single game. If we lost that game, we'd be a preseason top 25 team but not in the top 10 or maybe even the top 15.
My thoughts are that if we played App State the way we did last week but the game was in the middle of the season, and we were undefeated or had lost only to Bama coming into the game, people would have moved on by now. Thinking about the game that way puts it in a different perspective. Since we don't have anything to compare that game to yet, people are going to draw conclusions on limited evidence.
Having said that, they did have 8 months to prepare and looked bad, Dobbs and the offensive line in particular.