There is an interesting dynamic here however. Let's suppose arguendo that the sustainability program is money-losing in and of itself -- buying coal-generated electricity is cheaper than maintaining a wind farm (or whatever) even after the subsidies. That doesn't actually mean it has a negative ROI, because the sustainability program is good PR. It builds goodwill that spurs purchases and evangelism. And Apple needs good PR following all that business with the Chinese factory working conditions.
So now here's the trouble. If you're doing green energy for the purposes of public relations, and some troll from the burn more fossil fuels lobby starts asking you about the numbers, you can't come out and say "the numbers don't matter because it's a PR stunt" -- that wouldn't be good PR. You have to give the line about how you run a corporation with a conscience blah blah blah, because that's the line that keeps the yuppies buying Apple hardware. If you come out and say the whole sustainability initiative is to convince Green party voters to buy iPhones made in a city with soupy air in a factory with suicide nets by workers who never leave company property, or downplay the amount of money it costs you to do it, the Green party voters will hear that and not buy as many gadgets from you. The necessary line is to play up how selfless you are in doing all of this, because anything else defeats the premise.
Hmmm, after much consideration, gonna go with ad hominem.
Incidentally, what logical arguments would you recommend one use against people who have rejected science as a legitimate world view?
1) You're obviously a troll with a 20 hour old account, so you feel like you need to get trolling early today.
2) You assume that people who disagree with you on some topic have "rejected science as a legitimate world view". You should try to reexamine this assumption, as you may find out it's invalid.
If the trolls whine quote Citrine (UK) or Roberts (USA) at them.
And I have used Citrine as away of keeping control of a share holder meeting.
In this case, I think he's saying that because these are politically motivated shareholders, a reasoned answer would be lost on them. Cook could have whipped out a lengthy powerpoint full of charts and figures, or he could have done the chicken dance, or whatever ... he's saying the shareholders are not asking the question in good faith.
edit - Further, saying what you would prefer Cook do if you had asked the question isn't entirely relevant, since presumably you would be asking sincerely. Cook can probably tell those guys are only there to yank his chain and make him look foolish, so unsurprisingly he was somewhat hostile in response.
Maybe to see if somebody is interested in statements of fact, you should first try having the statement of fact. And not just say "well, I could drown you in facts, but since you're not worth it, I'd just resort to name calling". That looks rather unconvincing to me.