Looking at the images from article It's obvious. They put the led's, into the lenses, on the wrong side. Someone had a great idea, with the arrows. But by the time it got into production, the insides were reversed. Maybe a drawing was mirror imaged, maybe the layout at the factory was upside down? D6one simple little thing.
It’s not a good headlight design but it’s certainly not the worst either. There’s a zillion examples of really shitty tail light design on American cars in particular.
This is a pretty clickbait article and I usually like Jalopnik.