Speaking of lights, are there no laws in the US about how bright headlights can be? At the risk of being too dramatic, I have had cars behind mine with their lights so bright I thought they had their high beams on.
A bright-blue headlight of a modern car will actually make everything surrounding the headlights darker. A light which is slightly dimmer and more shifted towards red works much better for your peripheral vision. If you drive in rural areas the difference is very apparent.
Not only that, but street lights seem to be doing that as well.
Cross-walks here are now illuminated along the path with a strong shaped light. But the light is so bright that during night they just blind the observer: the pedestrian looks like ghost in a black background. IMHO this is even more dangerous, I frequently cannot see past the crosswalk, so a pedestrian which is passing behind it is risking much more than before. Go figure.
There are a couple of intersections which I pass frequently where the green light is too bright already during day. During the night, as soon as you get the green light you get blinded, which is _awesome_ since the light is guarding a cross-walk in this case as well. By night you cannot see pedestrians when you have the green.
The construction companies (who have to pay their own insurance premiums and generally avoid unnecessarily risking injury to people by blinding drivers) have long since toned down the lights they used (there was a short time period where they all had super bright lights because LEDs were new and cool so why not have a 1000W flasher), switched to the non-glaring light plants that use the canvas bags.
Slightly related, still widely off-topic: lights on bicycles, same problem. I think e.g. Germany has rules for those, but in countries where there aren't and/or there's zero awareness being raised it's sad to see how many people ride around with LED headlights which are way stronger than required and aimed straight ahead instead of down, completely blinding opposite direction traffic including cars. Now on the commute I do I've made it a sport to (friendly) shout to them telling to put their light down and it seems to have effect. But there's still a long way to go.
See also bicyclists.
There is a general saying that there are two types of lighting: those that allow you to see, and those that allow to be seen. In most urban areas with street lamps, one simply needs to be seen. Too many of my fellow pedallers do not seem to understand this distinction, and do not realize that more lumens does not always been better: at some point you're simply blinding people, and they can no longer tell where you are.
A moderately (500 lm?) bright blinking light, with a simple on-off, non-random pattern seems to be best IMHO.
Chances are that the car behind you had misaligned headlights or some dubious aftermarket modification, like a HID conversion kit.
You are supposed to adjust them based on the weight distribution, but people tend to use the highest setting, because that's the best for them. But if they have a lot of weight on rear, the beams are too high and can dazzle other drivers.
And sometimes the optics are simply misaligned because of shock, wear, vibration, ... even dirt can change the beam shape and be problematic. This is especially true for HID lamps, which are closer to a point light source and require higher precision optics compared to halogen light bulbs. And because it mostly affect others, these problems tend to go unnoticed by the driver.
An old crummy incandescent bulb in a 90s civic will produce a lot less light at the same wattage, than a new, super-bright LED.