I really encourage you to go back and watch some of the things that happened on the field. We had players running wide open and Peon couldn't see nor did he have the arm to make the throws.
It can easily be said that our defense almost cost us some games as well; Tennessee comes to mind.
Mac's offense works; players were wide open. Hard to say it doesn't when you are working with a corner at quarterback and a line that couldn't open a single running lane.
If the offense looks as bad this year then I'll gladly agree with you but hold your judgement till we have a better sample size. I'm not sold on Mac either and his inability to recruit at a higher level bothers me but I'm going to wait till at least year three to make my full opinion.