Cube is not a very popular brand of ebikes in the Netherlands as far as I'm aware. Definitely not for city bicycles. Gazelle, Batavus, Cortina, Vogue, Azor, but Cube? Not so much.
The bike brand doesn't really matter, the brand of the electrical motor system matters. There are 3 big leaders: Bosch and Shimano on the high end, Bafang on the low end with Brose, Yamaha and a handful of other smaller brands occupying a much smaller fraction of the market.
It does matter since different brands may offer different levels of weather protection. Typically only Dutch bicycle makers care about things like proper mudguards and chain guards, for example. And some, like Azor go crazy and test their parts in a rust chamber.
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?
> Typically only Dutch bicycle makers care about things like proper mudguards and chain guards, for example.
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.
They do have a lot of nice trekking models with upright geometry, full mudguards, rack and lights that can be used as a city bike though. Just not so many models with step through frames, aka "Dutch" bicycles.
I don't mean "Dutch" but actually bicycles built for the Dutch market, mostly by Dutch companies. And that means, among other things, bicycles that are excessively robust to avoid regular trips to service, and are built to live outside in the unpredictable and rainy Dutch weather. Cube doesn't come close to even cheaper Dutch brands. Also Cube bicycles are a maintainability nightmare with a lot of incompatible and proprietary parts.