Because why not (for the sake of ecology, of course).
The organizers of the 2020 Summer Olympics in Tokyo said that by the end of March 2019 they plan to collect the necessary number of gadgets for processing into medals. Awards will be made using non-ferrous metals from old smartphones, cameras, laptops and portable consoles.
The fact that a new eco-friendly method of creating medals will be used in Tokyo has been known since at least 2017. The organizers have repeatedly urged local residents to hand over unused devices.