You cannot legislate positive cultural attributes into being. There's no way to fine people into reading to their kids, picking up trash when they see it, deciding to put the grocery cart back, prioritizing academic achievement, etc.
You can legislate environment, e.g., when all you have is car-centric sprawling suburbs, it's harder to walk / cycle to school.
I grew up in a 'streetcar suburb', and was walking to school on my own (or with friends) by grade four (my dad woke me up, made breakfast, and then left for work: I knew I had to leave for school after G.I. Joe finished (at 8:30, for 9:00)).
Are they teaching 'lifestyle' - how specifically? Does the US not teach it? And do you have any evidence that homogeniety has something to do with it?
Often "homogeneity" is a dog whistle for blaming minorities.