I hadn't come across any bike light I thought was so bright to be extremely annoying until Saturday night. I was in the right lane of a multi-lane road with three e-bikes approaching me with them riding on the sidewalk. They were poorly aimed and so incredibly bright I would have like to run over the cyclists. If you are going to use lights like those, have the courtesy to make sure they are aimed at the ground somewhere in front of the bike. If you blind a driver as these did you are asking to get in an accident.