I know how it feels the same, but in my opinion, this is a horrible take that neglects the importance of the rest of the team.
In 2006 we lost Greenway and Hodge from the year before. Their loss to the defense cannot be overstated. The 2010 team lost AJ Edds and Pat Angerer, also from the linebacker spot. The loss of multiple NFL draft picks at the Linebacker position who were also multi-year starters is an objectively bigger deal than the return of solid, but flawed college QBs.
As for the DL, they need experienced backers behind them that have a feel for which gaps will need to be filled. They can't do it all. In both 2006 and 2010, our backers were absolutely abused.
This year, we return our linebackers AND our stud d-line, with solid DB's all around. There are no obvious holes to fill. Also, instead of losing 2 offensive tackles to the draft after 2009, we return two likely 1st rounders. The main losses from last year are obviously 2 NFL TEs and a really solid LB/Safety hybrid in Amani Hooker. On these points, I'd argue the TE losses are overblown. Last year was just an embarrassment of riches that I think everyone would agree didn't get utilized to their fullest potential. This year, we are returning perhaps our best blocking TE from last year as well as two solid backups. Losing Hooker definitely hurts, but that's a spot that was specifically designed to get our best athletes on the field and put them in a position to help us.
All this to say what we already know, this year is neither 2006 nor 2010. Crazy things could happen and we could tank, especially given the absolute monster of a schedule we have lined up. However, it is a rare thing in Iowa City to have a roster this experienced and talented from top to bottom.