Welcome to SR.
I think that the links you've been offered will provide whatever information is necessary.
IMO, it might be wise to simply let people know that you've stopped drinking, that you've decided it was unhealthy for you. I suspect that friends and family members react to the label "alcoholic," while they may not have any strong feelings about you're simply ceasing to drink.
In my extended family, hardly anyone drinks alcohol, and there is to my knowledge no one who identifies themselves as either alcoholics or addicts. The truth is....non-drinkers aren't so rare at all. My mother, who is 95 years old (god bless her) stopped drinking alcohol about 60 years ago, and to my knowledge,, no one has ever questioned her on it or even commented. She is IMO not an alcoholic, nor did she frame her abstinence in that way.
What's so confusing about someone simply wanting to stop putting a toxic substance into their body. Would they object if you decided to stop eating red meat?
blessings
zenbear