Meh.... I will shrug and not care either way .....
Apple's business is computers and related technology. Anything they do that directly affects the quality of the product they release is newsworthy to me, as a customer and fan of many of their previous offerings.
Anything else, such as this posturing about climate change, has no bearing on Apple's products, so I just don't care.
Any time a business gets too involved in "environmental issues" - they're simply playing a P.R. game, trying to look better in the public eye, or trying to appease some group that was previously attacking them. The fact is, ANY company producing a product for profit is already weighing the pros and cons of different aspects of production. They're always going to choose the most profitable option, when all is said and done. Sometimes that means doing things that please the "green" activists, and other times, it means running afoul of what they'd prefer a business do.
Apple evidently thinks it's more helpful than harmful to profits to pander to "green" advocates right now. Changes like going to aluminum and glass instead of plastic happen to work out well for them. (It may cost more, up-front, but it differentiates their products from the competition, making the extra cost worthwhile. The fact it aligns well with the whole "recycle!" agenda is a nice bonus angle for them.)
But it's really a double-edged sword. As Kermit the Frog used to sing, "It's not easy being green!" You can package your products in recyclable cardboard boxes and get rid of the plastic CD/DVD jewel cases easily enough, but one day - you're going to want to offer something that just isn't possible to build without having a "negative environmental impact". Then, you're stuck losing money and passing on something great, all to "save face" to the environmentalists you aligned with - OR you have to make excuses and "betray" them.
Good for Apple - many Apple customers will applaud this move as a responsible one.