Having had 2 lowish cars recently (mini/TT) I get dazzled a lot, but its because I drive down narrow roads.
All the new headlights do it, you can tell they are properly fitted ones as you can see them adjusting for the road level.
I hate being followed by them, its like someone is flashing me because they keep adjusting to the road level and going up and down, I can see my lights doing just the same.
The older halogen lights had a poor cut off so you would always get some light from behind, all that would happen is that as you went over bumps the intensity would go up and down.
With Xenons/LEDs they have such a sharp cutoff its all or nothing.
The issue is when facing oncoming close traffic your trying to focus on the road at the end of your dipped beam realistically if doing a half decent speed. Sooner or later you get to the point where an oncoming vehicle is around that point, if at that point the road undulates and their beam moves just a few degrees upwards you are likely to briefly stare at the light with no masking effect, there is no way your eyes aren't going to react to a sudden increase in light output at the distance your looking at by not adjusting.
If your mainly driving on major roads or in areas with other light sources your likely affected but to a limited amount. Certainly having other light sources helps keep your bearings so the feeling of losing vision is massively reduced. However if your drive down unlit roads and have oncoming vehicles taking a close line to you then its just a natural reaction to the sudden high light level your eyes detect. Its a temporary blindness as your eyes adjust both to reduce the incoming light then have to readjust backwards once the car coming the opposite way, the source of high light output has passed.
LEDs are the saviour here. They will get better and better at closing down the areas of the matrix that cause vehicles in front issues.
I rarely use full beam when driving now, as your eyes adjust to the light output the impact of having to drop to dip beam seems worse than just driving to dip with occasional use of full beam.
Slowing down a little and driving to this distance when your on anything but decent roads isn't necessarily a bad thing to do at night anyway.