And, for example, the Cube bicycle as depicted in the article, is clearly not designed to be used in rainy weather. Who knows what else shortcuts they took?
That is not true.
It is about class of bikes, not brands. Sure there are brands such as Gazelle who focus pretty much on those characteristics only but there are other brands doing the same all over the world alongside more racy models.
> And, for example, the Cube bicycle as depicted in the article, is clearly not designed to be used in rainy weather
The bike depicted is a mountain bike, so no it hasn't be designed with fender in mind but that doesn't mean Cube or any other non-dutch brand doesn't produce city/trekking/touring bikes.
Having said that, I would expect a mountain bike to be built to survive wet and muddy conditions.
Bosch is also widely used in the Netherlands.