As a family member and caretaker of someone with this disease, it is worse than what you read about in these articles. And no, you don't have to get drunk every day to have it. It also comes from long-term alcohol use, like having your evening drink every day after work.
My mother has this disease. She is 72 and her brain atrophy looks like someone who is 112. She can no longer walk, talk or write. And her mind is still sharp. For her, it's like being trapped inside of her own body. She can't communicate or do anything for herself. She started with confusion and forgetting how to do things. Next came the constant falls (10 to 15 a week). Her eyes hurt all of the time and her vision is very poor. Her speech became slurred and eventually indecipherable. She can't feed herself anymore or brush her own teeth. I can't even begin to imagine what her frustration is like for her.
She can no longer go to any family functions. She doesn't want to be around anyone else because of her symptoms. She drools all of the time and her nose runs like a water faucet.
Please know that this is very real. It's awful for the person with it and for those caring for them. And this can last for many, many years. She was diagnosed seven years ago, and that was after the physical symptoms started.