I don't like blaming one generation or another. What happens is that people age and as they age they shift their political stance. Another important differentiator is whether they have children or not.

As for the Dutch, yes, we have a lot of bicycles and people tend to get a bit more exercise here but there is still plenty wrong with Dutch society and if you took a 10 km altitude photograph of the country you'd probably still conclude the dominant life form is a steel box on wheels.