On an ethical level, I do not like Earth shot. It is part of a big push to see technology as the way out of climate change. It is not. It is part of avoiding what really needs to happen.
I know this is an unpopular opinion though. But simply having less polluting cars, planes, etc etc is not the solution. We need wholescale changes.
Working from home or shared local office hubs, public transport properly invested in, limiting flights severely, banning log burning stoves except in rural areas where there are no other realistic alternatives, etc etc.
We cannot continue to live the way we have been doing and rely on technology to enable this. It does not work and is simply delaying the inevitable.