Alternative employment might not be as easy as you think it is, if driving is his only skill-set and given his age. You then make a false equivalence. His driving is likely to be much more cautious as a result of this horrific incident. The point of restorative justice is to try to find the best way of dealing with a crime. It may be to disqualify him from driving. It might be to force him to retake his tests. It might be a permanent ban. But his circumstances are still valid. You have no idea about his family, who relies on him and for what. On the other hand he might not want to drive again anyway, he's close to retirement age. In which case banning him serves no real purpose.
It might be that he has no dependents. It might be that he has a severely disabled son / daughter / mother / father and the money he earns pays for treatment and care. There is a whole spectrum of circumstances that a Judge takes into account to determine the appropriate sentence. Throw him in prison? That's expensive. Is his attitude going to be any different when he leaves prison, or is he already contrite and devastated by his own actions?
This is why Judge's take great care when sentencing and consider all factors. Otherwise you end up like America and just throw everyone in prison for ever.
If his livelihood, and that of his family depend on his licence, then his driving should be above reproach. It boils my piss when people rack up points and then play the hardship card.
It's not that hard to drive within the law and carefully.