Depends on your definition of alcoholic (which I'm sure is a moving goalpost for you to prove your point). For the over 100 years old, how would you define it for them?
Personally, my grandma in law had 2 drinks a day up until she died at 101. Sharp AF to the end.
Juan Vicente Pérez? Jeanne Calment? They loved their alcohol.
This was an important point in how I came to terms with my own inability to handle alcohol. Because the truth is there are old alcoholics, there's happy alcoholics too. There's people that given the choice, would take the trade off of 10 years off their life to keep drinking, and be totally fine with it. And the point isn't to say, "why can't I be one of those people?" It's to say, what is MY relationship with booze and am I ok with it?
And just like a lot of things in life, you just have to accept your reality versus what you'd prefer your reality to be if you want things to change. And once I finally got the point that I realized my relationship with alcohol will never be like those people, I quit being frustrated that things weren't that way and began to move on.
My High school shop teacher was a vital, athletic, healthy 28 year old, and was one of the 2 or 3 best teachers I had in high school. I remained in contact with him for the last 30 years. He died on Christmas Eve two years ago at 66 years old of acute liver failure brought on by 40 years of drinking three cases of beer a week. Great guy, and I am still heartbroken.