I don’t understand the seeming lack of regulation for flashing bike lights.

I don’t mean a simple “normal” flashing light, but the super bright ones that are like a camera flash strobe going off 2-3x per second which hurts your eyes and kills your night vision, making it hard to see anything including the actual cyclist.

It used to be law that a bicycle had to have a solid on light front and back at night, and any extra flashing lights were optional extras that didn't count, but they scrapped that law several years ago.