Batx00, that you do not get flashed is not proof of anything. I get blinded often by people who do that and I don't flash them because it's obvious they're not on their high beams but rather have altered their headlights, so for the time being there was nothing they could do except turn their headlights off which obviously wasn't going to happen.
To whatever extent they light the road more, they also shine into oncoming traffic more. The only way around that would be to deliberately aim your headlights more to the right, but then you're worse off for discerning detail up the road and still blind people because of the color of the light. The more the color temperature shifts from red to blue the worse the effect.
Obviously "some" vehicles have headlight reflectors that make this worse than others, in combination with specific bulb designs and light intensities. It's also worse in the case of a vehicle with higher headlights like a truck or SUV, when behind a car and the headlights flood the passenger compartment.
That can be VERY dangerous yet people with brighter lights don't accept they have to drive further back behind the car they're following than anyone else due to this. Also remember that even things like stopping at a stop light at night, you can't pull up as close to the vehicle stopped in front of you. You'll night blind the person in front. How would they even let you know, get out and bang on your window?
Regardless, I'm quite sure that many people who put the LED lights in incan housings are in deliberate denial, refusing to accept IF their lights help them see better, it's at the expense of everyone else on the road.
Ironically I've even told people when I noticed their lights and they said something similar to "I doubt it because nobody has ever said anything." Hmm, but I just did.
