In a world where striving for lower environmental impact should become core business of every company and individual because sustaining the current lifestyle of many is going to severely damage the planet in one way or another, this is not the kind of sign major companies (and they pretty much all do it in the mobile business) should send into the world.
For a lot of people these companies are half gods, and what they do shall be believed in, it becomes part of their education. Making people believe buying devices and throwing them away after a just year or two is standard isn't exactly noble. Yeah yeah I know money is the driving factor behind companies, but that doesn't mean it cannot be combined with sending a 'greener' message into the world.