I very much appreciate your commentary, as each point is relevant to this discussion.
First of all, we should leave uncontacted peoples alone. The 'gift' of modernity is not necessarily a benefit.
Electricity, any cultural intervention, should be solicited, not imposed.
However, for many people who live in underdeveloped or undeveloped economies, the struggle is to meet the demands of the industrialized world without having adequate tools to do that. A child should be able to do homework at night. Refrigeration has an indisputable place in increasing food safety, and availability. These are just basic benefits of modest electrification.
As for using too much--oh my, yes. The first step in reducing CO2 emissions is to reduce use. There seems to be no awareness that on an individual level we all have a responsibility to reduce consumption.
As for clean energy technology--I looked up Hamburg Airport. It seems they use geothermal. I'm not sure how that works, actually, although I have read that some geothermal does contribute to global warming. Don't know much about it.
I did find an example of one village in Sweden that has managed to become carbon neutral. It's a wonderful beginning, but at this point this sort of enterprise is still in the experimental stages. We need to do so much more in the way of research and development. We can have a carbon neutral electrification system around the world, but greater storage and collection capability is necessary. And this has to be more affordable for the average consumer--much as transistor radios or wristwatches are today.
To me, this issue is so clear. Perhaps you will think about it more and do your research--which you do very well on so many subjects.