> The Netherlands is no class society

Americans used to claim this too. It’s invariably false. It just means that the wealthiest people do a better job of concealing, or not advertising, how vast the wealth discrepancy between them and the average person is.

> Seeing people in BMWs at the Aldi parking lot

The least wealthy person on the list at https://en.wikipedia.org/wiki/List_of_Dutch_by_net_worth could afford 10,000 high-end BMWs and still be extremely wealthy, far too wealthy to have any interest in lining up at Aldi’s for a sale.