I get the moving away portion, but if underage drinking was >50% of the population in the past, isn't that the norm, not the words on the law? That would mean n

I get the moving away portion, but if underage drinking was >50% of the population in the past, isn't that the norm, not the words on the law? That would mean now is more deviation not less. Of course, that's entirely down to how you want to frame it.