I just scrolled through the comments....it seems that nobody read the article. The article didn't suggest he come on as the DC, it suggested he come on as the DL coach:
Sports writer Corey Long believes that Orgeron will want to go back to his roots of coaching the defensive line.
“I think he wants to go back to coaching d-line,” Long said. “He’s a tremendous d-line coach and a tremendous recruiter. He recruits great players. That’s what he does.”