It does seem a little silly, especially given the inherent losses.

Yet, the five seconds you save by not plugging in a USB cable have led to charging coils being added to nearly every phone to the market these days.

It's a flashy convenience feature, but this is Porsche we're talking about. People interested in buying these cars are all about flashy features without any practical use, because if they wanted a practical car, they wouldn't be buying a Porsche.