Why would someone in Tokyo care about the cost in Germany? In practical terms it means a family with 2 kids needs both parents working fulltime to pay the bill

Why would someone in Tokyo care about the cost in Germany? In practical terms it means a family with 2 kids needs both parents working fulltime to pay the bills and save some money. If only one parent works, they better have a really good paying job, or be content with not being able to save any money.