My current best explanation is that the engineers of this system were dissatisfied with the personal connection the artificially intelligent warden was making with its inmates, and replaced it with a more logic-based system.
To protect the general population from its more dangerous members. To date, we've had to address trapping people in alternate dimensions via games, centuries old bloodthirsty vampires, serial assaults with intent to kill by a woman with a knife, and others that simply hold no respect for the lives of people around them.
If you're interested, you might like to speak with Sir Gino Weinberg. You must also pass a psychological evaluation.