Wow. You're really into revisionist history, aren't you? What's next, the United States provoked Japan into attacking Pearl Harbor?
The offensive line was the worst part of McCarney's last few teams, and arguably the reason (along with kicker) for the losses that got him fired. Oddly enough that line didn't magically improve in the fist few games of the Chzik era--especially with so many redshirts (Lamaak), recruits (Dedrick) and other relative newcomers (Stephens and Tibbs) stepping into starting roles.
Wasn't much better last year, either, especially after Mike Knapp went down, then Lamaak, but it did begin to solidify towards the end of the year. This season, Year Three of the process, I would expect the group to be reasonably solid.
But of course, you would feel that's due solely to coaching--not the fact that it's seasoned juniors and seniors, with a modicum more talent, currently starting.