I'm not sure about other countries, but all vehicles sold with HID (the bright blue headlights that many people find annoying) headlights in the US must come with an auto-leveling system. I'm almost 100% certain that the standards are the same or higher in Europe.
The fact that (as you point out) those bright blue headlights are especially offensive to many people would suggest that the auto-leveling system is not doing its job.
The more blue the lights are, the greater the chance they are not factory; some schmuck stuck HID bulbs in halogen housings. This means no auto-leveling, no proper beam focusing, etc. It is already widely known that doing so is a Very Bad Idea (tm), but some people have absolutely no deference to their fellow drivers on the road.
The OP said, "The real problem is that, at least in the US, no one seems to care about keeping their headlights aimed properly..." I'm only pointing out that proper adjustment isn't the issue.
The matter of HID headlight annoyance is well-trodden territory in automotive circles. Owning a car with them equipped, I appreciate the additional visibility. On the flip side, living in an area where they are common, I appreciate that they can be blinding if you're caught in the beam.
