I do not know the US well enough to comment, but the US has always been a lot more anti-alcohol than (almost anywhere in) Europe.
This is more like alcohol apathy - not drinking, but also not explicitly anti-alcohol. That the more generational shift in Gen Z that I've seen. But, those sentiments can certainly change over time.
1. health concerns mean moderate drinkers drink less, but heavy drinkers have not changed their habits 2. young people seem to go more to extremes: either drink a lot or be teetotal.