Yeah I always used to prefer the more liberal policies (when it affected me) and wanted to raise my kids that way but here in the US you just can’t hide from binge drinking issues predominantly in teenagers. And that type of alcohol abuse seems to have decreased with the stricter laws (a later start to problem behavior gives some time to mature)
I don’t know what about those other cultures may cause different behavior patterns but it’s not simply a matter of us loosening up, nor of parents setting an example of moderation