That is crazy and at the same time so Belgian. Belgians have 0 understanding of anything to do with cars. Their roads are horrible, they are horrible drivers, it is crazy.
When I lived in Brussels all traffic lights of intersections would go green at the same time and red at the same time. So lights for pedestrians AND cars in ALL directions. People just can't drive at all, they can only honk their horn. Potholes in the highway are filled with pebbles and sand, etc
My theory is that it has to do with how they learn to drive:
It used to be super easy to get a drivers license in Belgium back in the day. Basically you'd just go to the town hall and buy one. They now have a system where you get a special permit to driver with an 'experienced' supervisor. Usually one of your parents for a certain number of months before going to an exam to get your license.
Let's say that a professional driving instructor can get across 80-90% of their knowledge of driving cars to someone. Now imagine how poorly an amateur would do, 50%? 30%? So you learn 30% of someone who learned 30% of someone...
In general though, it just shows how unimportant the average Belgian finds cars or properly learning about driving them and traffic, etc. So maybe the learning how to drive is just a symptom of an overal lack of caring with regards to driving properly. As this strange pay-to-win driving schema also shows.