He didn't hire the coaches. Ireland wanted McCoy and Ross wanted philbin. Philbin assembled his coaching staff. he signed great players grimes, keller, Wallace, Gibson are great players .
Signing players is the easiest thing a GM has to do. Does it take a genius to sign productive players? Not at all, but it comes with a high price tag, whereas drafting players that become stars, solid contributors and position depth is where a GM shines. Ireland has done none of that and when he has, they are traded away or let go for nothing. He has definitely drafted some decent players but for the most part it's an atrocity.