I think we are slowly getting there, as far as being more open to discuss addiction within k-12 curriculum as part of health education; also by -don't laugh- having more and more TV characters in recovery (long gone are the days where only Detective Briscoe from Law & Order was an alcoholic), and discussing recovery openly at work and in social circles. However, once you commit a crime while under the influence, you should be treated as a criminal. You cannot use addiction/alcoholism as an excuse/cop out for murder. It helps no one.
So yes, let's work on prevention. Let's talk about it. But let's not allow us to treat it as a get out of jail free card. I am not saying that is what you implied, to be clear
I definitely agree with everything you said.