Believe it or not, this guy has probably been given a longer custodial sentence than had he been convicted of what's called "motor manslaughter", whereby on conviction he may only have been banged up for a few years. It seems as though they've compromised (yet again in a Court) with that well worn term of "plea bargaining", designed to "get off" with a lesser offence.
The real problem with the disqualification period is the perception which most folks have of it with a case such as this which involves a fatality.
Unfortunately, the law is very weak, for example, if a person was to be disqualified for a third time, they may receive as little as a two year ban.
His total sentence therefore, strictly within the law of the land, is not lenient, although many human beings would regard it as just that.
Gromit:
An interesting observation and, far be it from me to be cynical, but less than a year later we had a General Election. Does that tell you anything?