There are stil legitimate reasons for those size vehicles to be on the road so I think it’s still good to have safety for all sizes, but I see what you mean about spiraling out of control easily.
In Denmark we have the lovely new law that if you drive more than 100% over the speed limit and over 100 kmh or drive over 200 kmh at all or drunk driving with over 2‰ they confiscate the car and you are not getting it back at all. They confiscate the car regadles of who owns the car (with very few exceptions) and that is also if it is leased. So far since when the law started they have confiscated over 2000 cars in two years. It’s my favourite law of all laws right now. The fine for driving crazy is also nicely proportional to your income and it removes the car so the person cannot just drive without license afterwards.