Yeah, HIDs in a reflector housing are a complete disaster. At least with the average LED bulb the beam pattern sort of matches what you would get from a halogen bulb (there are some that are really close now but they're super expensive). With HIDs the beam pattern is completely different and so the headlight often ends up throwing more light up, to the sides, and immediately in front of the car than down the road where you actually want it. What ends up happening is not only do you blind everybody but everything else is so bright, and so little light actually makes it down the road, that you're visibility can actually end up being noticeably worse since your night vision is impaired by how bright everything is immediately around you.