You could probably back this up by looking at the alcoholism rates in Scandinavia (especially Norway and Sweden)
Scandinavia had their own prohibition and still to this day have a strict 18/21+ drinking age with booze only being sold during very specific hours (and never on Sundays or religious holidays), with anything above I think 12% only available at the government run bottle shop
I think people know, they just don't give a shit because they think they're entitled to have art and artists are arseholes for not giving them exactly what they want