Yep, because they’re cheap. I don’t notice it anymore, which only tells me that things have improved, I used to see it a lot with brake lights. Not so much with headlights.

I dunno why they’re horrible, I just know that’s an effect of PWM control that’s been set up pretty poorly.

I’m not an engineer, nor do I work on cars, either designing them or fixing them. I’m just some guy.