Well, put it this way, if he had only had a couple, there is NO WAY that would still see him over the limit over 12 hours later.
He MUST have had a proper session.
Whatever the circumstances, Drink-driving laws aren't JUST there for Police Revenue. Imagine if he had passed a school on his way out this morning and his reactions weren't quite up to scratch?
I can judge, because I served a 12 month ban for Racing. I took it on the chin and am still suffering the higher Insurance premiums now, and the ban was in 2001!
Put it this way, he obviously didn't know he was doing anything wrong by driving the following morning, so he clearly needs to learn. Thats why these punishments are there. If he hadn't been done this time, perhaps next time it would have been worse.