Alas, the author failed to do adequate research before getting on their high horse. Yes, cloud computing sucks power (which is then vented to the outside world, it could be recycled _and_ cut latency) but you know what pushes out more CO2? Poor house insulation.
And you know what emits more CO_2 than poor insulation? Transport! And what emits more CO_2 than transport? China!
With that logic, we'll never cut emissions anywhere.