There is a lot of talk from those involved about being worried for his health but they busted the poor guy.
Note that he wasn't driving, they couldn't proove that he was driving nor that he had hurt anyone etc. he was simply in posession of his car keys and in his car while very drunk. For this he has already been banned from driving and will likely be banned for a long time.
There is no excuse for drink-driving, it is very dangerous and hundreds of people are killed every year because of it but this chap was asleep in his car, not actually driving (nor could he, even if he wanted to!).