I’m nearly certain that camper is way over that car’s tow capacity. If so this is dangerous and stupid. Drivers like this, who endanger everyone else even near the road for their inability to use common sense, should be banned from society.
It probably would be in the US, but laws and regulations are different in Europe. The US favors huge heavy towing vehicles and higher tongue weights to allow for higher speeds, Europe limits speeds and allows for normal cars and more balanced trailers. We also have lower speed limits for semi-trailers and similar vehicles, so they fit right in.