I wouldn't read that. I believe that thinking about insomnia can cause insomnia. It's very hyperstituous.
I wonder how much of addiction is down to the substance itself and how much is down to situation (is alcoholism always an illness, not sometimes just a product of environment/other problems)? Seems like AA take it as axiomatic that the substance itself is the problem. But some people might just be in an environment that encourages drinking (like Russia) & because it's normative everything is chill until you realize your nightcap isn't just a g & t anymore, it's half a liter of vodka.
Or you might be drinking because you're depressed, anxious or just live in (seemingly) unbearable circumstances (drinking often makes them worse, naturally). I drank every day for three months or so, starting early afternoon and going on until the early hours. But this was due to circumstances I didn't like and wanted to be at a remove from, to kill the anxiety so engendered, little to do with any addiction to the substance itself.
Once I'd extricated myself from that situation, I just went back to 'drinking responsibly' without giving it much of a thought. But seems like according to AA, I should never drink again because I'm an alcoholic for life. It's a 'disease'.
Other times you might spend a week or two drinking heavily on a daily basis just for hedonistic reasons. Celebrating a divorce or something... (heavy drinking is perfectly normal in this set of circumstances, it's not pathological).
Of course, often it is a physical addiction to the substance itself though. And good luck to Craner.