In your world he’s dead. But actually the death penalty is very inefficient in countries like the US, where people are on death row for years, or decades.
So if he’s alive, in both cases, there needs to be incentive to behave. Otherwise you get violence against other prisoners and officers. If he has an XBox, he’s less likely to stab someone with a toothbrush.
Because whole life tariffs and no perks at all makes people MUCH more dangerous. They have nothing to lose.
And BTW, people with no experience shouldn’t comment without thinking. The actual issue is that the DM is publishing nonsense to get everyone frothed up. They don’t care about the familys’ feelings.