I get flashed all the time when driving like the oncoming driver thinks I have my high beams on. I just flash my high beams back to show that I don't have them on. I have 2 SUVs, the older one is a 2015 and still has the older style headlights but still get people that flash me and my other is a 2023 that has the LEDs and I definitely get flashed more when driving that one. Must be because they are mounted higher I guess, I can tell a big difference between the 2 as the newer one with the LED seems to cast a much further and more crisp swath of light ahead than the older one does.
Same people that are flashing the brights at me are probably the same ones that are driving cars without automatic headlights that don't turn them on when the fog is so thick I can barely see them coming. That's more annoying to me than thinking the headlights are too bright is not having them on during weather conditions that they should be on so people can see where you are on the road.