There are many reasons to not drink, including personal convictions, family history of alcohol abuse, health reasons, religious/belief reasons, not enjoying the feeling of being drunk, or simple lack of interest in drinking in the first place. Do not assume that parent is somehow trying to elevate themselves over anyone, you or drinkers in general.

I re-read your parent four or five times, searching for the smugness or self-righteousness that seemed to offend you. I could not find it.

i used to be borderline alcoholic, and managed to quit. mainly because my job allowed me to do so.