Why does everyone criticize Deangelo Hall?

The announcers often criticize D-Hall especially Troy Aikman. I remember the Redskins vs Bears game when Deangelo had 4 picks, Troy kept saying they should challenge him deep. Even at the Pro Bowl where he won MVP, the announcers always seemingly ignored it when he made a big play and even tried to blame him when Devin Hester fumbled the kickoff trying to hand it off to D-Hall whats up with that!