Last time I checked the methods of measuring temperature via satellites was not percise enough to even account for that scenario. It's like stealing ten people's drinking water so that you can put out a big forest fire. Knowing it will not at all impact the forest fire but it will sure as hell make the ten people angry. And then celebrating yourself for doing something. It's beyond stupid.
They're almost as bad as the ones in Germany who glued themselves to the streets and then couldn't show up to court because they flew to Bali. These people are seriously something.