I agree overall, but for Germany in particular, they have fewer opportunities for renewables than other countries. At the same time, their most plentiful source of home grown energy is coal which is worse in every way to the gas they were getting from Russia. The economy only matters in so far as it serves the people, but it unfortunately matters a lot for people’s well being, especially in the context of global capitalism.
No. It’d be very difficult to actually have humans go extinct. Bad things will happen, but extinction would require a Children of Men level situation.