I agree. And again, the "I didn't know" excuse is just a way to rationalize the behavior of the head coach and athletic leadership.
Simply put they (UNC fandom) think Butch Davis gives them the best chance to be a contender on the national football scene and therefore they are willing to believe or at least accept that he did not know.
The problem is that the "I didn't know" excuse is either a lie or it is an admission of incompetence. Either way, if Davis worked for me he would be fired. He is either lying or he is a fool because only a fool would hire a person with Blake's reputation and expect that he would walk the straight and narrow all by himself. For the record I do not think Davis is a fool.
I still say give it a few years something else worse than this will turn up and the whole house of cards will come down. UNC has allowed this behavior to go unchecked and now it will fester and declare itself at a later time.