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So your "a few points to consider" are just a way to convince *yourself* that 100% RE is practically possible but in reality are a mix of wishful thinking and denial.
This is no different from climate deniers ("oh we can just use geoengineering when it becomes too hot") and has exactly the same effect as climate deniers.
This denial has consequences in both cases: thanks to this denial by Greens, Germany right now emits 5x more CO2 from energy sector than France.