Well, to start with, while I see some merit various approaches in exploring this issue, I have trouble defining alcoholic with being "diseased" or just a "social/relational game" or some other similar construct.
Sorry, but my life was irrevocably changed by my father's alcoholism (which is still ongoing, 40-50 years in the making), and while I naturally detach from things, the issue is extremely personal to me and in many ways I cannot see my father as a victim... at least, except maybe as a victim of his own cowardice. It's hard when you want to feel sympathy for the trap someone is in... until you remember that they constructed the trap themselves, went inside, and locked themselves in it... and took others with them. I will be dealing with baggage from my father's alcoholism for the rest of my life, although the struggle to get past it has made me strong.
It takes courage (among other things) to beat an addiction, and cowardice to me is a moral failing if you choose to succumb to it and never be honest with yourself.
As far as "alcoholism" itself goes, I just see it as persistent out-of-control drinking. If you need to use it as a crutch in order to get through your life, despite how it's contributing negative things to your life or tearing apart your life, you're in a shitpit of trouble.
"Problem drinking"? Yeah, whatever. That just seems to be a copout on the road to alcoholism to me; if it's a problem now, it's only going to get worse. It just seems to be a phrase for people who aren't quite willing to face they might be an alcoholic, it sounds safe and more clinical. Put another way, what's the difference between a problem drinker and an alcoholic? Answer #1: five years. Answer #2: The person who's doing the talking.
If on occasion you get rip-roaring drunk just to have fun but otherwise you can go for months without the need to drink, I don't consider that alcoholism. It's not a lot different than snorting Pixie Stix or Pop Rocks for kicks. It's the compulsive nature of the drinking, or the sense that you can't make it without the drink, that to me defines the weakness of character. Yes, physical addiction can occur; but if you hate what your life has become and/or you are destroying people you love along with yourself, then you face that truth and climb out of the hole.