I know I was just saying 3000 years and basically nobody alive today understands the language. Even people who devote their whole lives to the languages around at that time are basically just making informed guesses on pronunciation and would probably struggle considerably to understand an actual speaker.
LEDs aren’t the problem, it’s that they’re too bright in the forward direction. It’s perfectly possible to make normal brightness LED headlights, car manufacturers just don’t do it because bright headlights look great on the lot and sell more cars