Ok - just to let you know he's drank twice in the last 2 months no excuses! It was me who got concerned over his silence. He's never used it to excuse anything.
He does blame himself - totally, he blames the teenage him that found he could actually talk to people, he blames everything on himself.
I however feel he is responsible for his decisions and always has been BUT I think tackling the problems he encounters SOBER just makes sense.
I understand you wanted to help though.