There's an intersection near my house where they repaved the road this summer. The lane markings on one side of the intersection are about 2 feet offset from the other side of the intersection after they repainted them, and it trips the lane detection about 50% of the time even when I'm actively trying to compensate. I suspect that intersection will become a graveyard of bricked cars once the law comes to pass.
There's an oft-posted meme of a barely accessible country trail in a field with a 100km/h speed sign but this is actually quite common there.
But I can imagine how this is super dangerous. I don't want my car second-guessing me constantly either especially if it can do something dangerous. In rural Ireland in summer you'd often be meeting a tourist coach on a bridge with centimetres to spare. Really not the time for my car to suddenly pull at the wheel.
I think instead of mandating this stuff we should just focus on full self driving. If the car knows so much better let it handle the driving and let me do with my time what I wish as a passenger.
It also takes a whole of complexity in terms of driver/car interaction out of the equation.
I got a new car a couple of months ago that has this, and was experiencing similar issues on rural Texas farm roads. I just had to look up where mine was and turn it off temporarily.
I also have a Subaru - turning it off or on requires three levels of menu navigation, and you have to use the center console touch screen.
I suppose they do their testing and validation in drastically different environments!