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> What am I supposed to take away from this? Start a campaign for tundra deforestation?

They're just calling out the positive feedback loop where "things that aren't white like snow absorb more heat than white snow would."

The obvious solution is to cover the entire world in powdered soap or talcum powder, since we're pretty much out of snow and glaciers.

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Would something reflective on the Earth's surface even help cool the planet when the reflected energy just gets trapped anyways by CO2 in the atmosphere? I can understand localized albedo effects, but not their overall effect on climate.

All that heat wouldn't be trapped by CO2. You'd also experience reduced energy load in the developed world, as buildings with black roofs are objectively harder to keep cool than those with white roofs. Which would have a positive impact on CO2 levels (positive from our perspective, meaning reduced).

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