"As Amazon became large, we decided to use our scale and scope to lead on important social issues". A bold claim for a company widely known to exploit and underpay workers in distribution warehouses.
I also wonder what's the overall CO2 footprint of Amazon and what's their record about recycling, repairing, etc. I know they propose some tools to help for that and they may even be more efficient than others, but as a company with "lead on social issues", it needs to have more than "a lead", it needs to question its very own existence. So the mail of Bezos, is, in my view, not ambitious at all.