People whose weakness threatens to kill people need to be removed from the threat. And frankly I doubt most drunk drivers are alcoholics they just make bad decisions. Bad decisions that could result in the death of others. There’s nothing excessive about the punishment, people get their licenses revoked all the time without there being any drunkenness involved. Establish that you don’t belong on the road through sufficient citations and you get your license revoked. And the punishment very well fits the crime, they proved they’re unsafe to have on the road, and now they’re not allowed on the road.
It is a puzzle.