You raise a good point, though I would also argue that American style parenting is a reflection of broader cultural forces. As I'm sure you've experienced, people are quick to blame parents for just about everything, but the so-called "helicopter" parenting style didn't arise from a bunch of randomly neurotic moms, as so many critics seem to believe. It arose from a culture of fear-mongering, including highly publicized but statistically unlikely kidnappings in the 80s and 90s, alongside the dissolution of walkable neighborhoods and the decline of civic engagement and community-oriented lifestyles that have left families incredibly isolated. It's kind of a chicken-and-egg scenario -- if kids behave badly at multigenerational gatherings because they're not accustomed to multigenerational gatherings, is the solution to exclude them or is the solution to involve them in more multigenerational gatherings? Again, whatever an individual couple decides to do is up to them, but the broader trend is still something that makes me sad.