Oh where to start...
Ok, well going $1B in debt for a silly initiative is a bit irresponsible. Contrary to what Wallstreet type pundits will tell you, debt is almost never a good thing. If you have the cash to spend, then fine, do that. Yes, I know the corp. tax rate in the US is insanely high. Thank you democrats. Apple is a corporate citizen, so if they want to waste money, that is perfectly fine in a free market (what's left of the free market anyway). I wonder how most shareholders feel about this?
Speaking of cash, most of which Apple holds overseas, why doesn't Apple spend $1B in cash for a green initiate overseas? No repatriation necessary. Since China, India, and other "developing" countries are the world's biggest polluters, would it not make more sense to run green initiatives where the pollution is, instead of in the US which, contrary to global warming alarmists, is the cleanest country on the planet?
Oh Parie, Parie, Parie... The Paris climate accord does nothing to curb "greenhouse emissions," rather all it does is further fleece America of its wealth and creates a path to undermine the sovereignty of the United States. Thank God there's an adult in the room smart enough to remove the US from that disaster of an "agreement." I could go on, but 'nuf said.
One has to question the decision making ability of a CEO who says "climate change is real." Well, okay, he's right in the sense that the climate is always changing; it's been changing for the past billion+ years - but of course what he's referring to is the "climate change" agenda, formerly the "global warming" agenda, which is nothing more than a political operation for the redistribution of wealth. Hell, if you believe what Al Gore has been spouting, then Miami should have been under water 10 years ago. Funny, my favorite beach down there is, oh my gosh, wait for it... IT IS STILL THERE!!
Follow the money. Everyone who pushes the climate change agenda falls into one of two categories - beneficiaries or useful idiots. Apple stands to make gobs of cash in the energy sector, as well as from product sales through the marketing of "green" products. And that's fine, there is not a damn thing wrong with building solar arrays and "green" products, just be honest about it. Build whatever kind of products you want, but don't get wrapped up in a deceitful agenda.
Finally, a closed-loop supply chain is impossible. This is due to the law of entropy. There is no such thing as a perpetual motion machine. Even our sun will eventually burn out. Due to decay and loss (in many forms) it is not possible to recycle enough components to manufacture a complete new component. If Apple is lucky, they may be able to obtain up to 70% - maybe 80%? of the material needed to manufacture a device from a previous device. To make up the deficit, they will have to obtain material outside of the loop. With careful planning and execution, they may be able to obtain the extra material by recycling products made by other manufacturers. Eventually the supply of these materials will run out, particularly if other manufacturers start their own "closed-loop" supply chains. At some point (sooner rather than later), it will be necessary to obtain 20-30% raw material to continue manufacturing new products. Again, just be honest. There is nothing wrong with recycling, it's a worthy effort, worthwhile, and with the right technology it can even be economically profitable, just don't lie and tell people that "closed-loop supply" is possible, because it isn't.